JP2022553170A - Textile fiber or textile web, methods and uses associated therewith - Google Patents

Abstract

The present invention is a textile fiber or textile web comprising a binary polymer composition, the binary polymer composition comprising: a first polymer that is cellulose acetate propionate; and a first polymer selected from several polymers. and a second polymer. Furthermore, methods and uses related to this textile fiber or textile web are described. [Selection diagram] Figure 2

Description

FIELD OF THE DISCLOSURE The present disclosure relates to synthetic textile fibers and their manufacture, and more particularly to textile fibers or textile webs comprising binary polymer compositions.

There are various methods of manufacturing textile fibers and textile webs.

Fibers are typically manufactured by various spinning methods. Such methods include wet spinning, dry spinning, melt spinning, extrusion spinning, direct spinning, gel spinning and electrospinning. Of particular interest among these spinning methods are those that do not require solvents. For example, many wet spinning solvents are highly toxic. Melt spinning is a method of extruding a polymer in the molten state through a spinneret and cooling it without the use of solvents. Prior to the spinning process, the polymer can be in various forms such as granular, fluffy, fibrous, or extrudable directly into the spinning process.

These fibers can be further processed into yarns (twists, yarns) and fabrics. For example, textiles are made by weaving or knitting threads made from fibers.

Nonwoven fabrics are manufactured as sheets or webs of directionally randomly oriented fibers that have not been processed into yarns. These fibers can be joined by, for example, adhesives, thermal methods, solvent treatments, or stitching. The manufacturing process of nonwovens is different from that of spun fibers. These manufacturing methods include meltblown processes that use high velocity air to produce fibrous webs or moldings directly from resinous polymers. Spunbond nonwovens are produced as a continuous process in which fibers are spun and then dispersed directly into a web. The spun fibers can be cut, opened and made into webs in a multi-step process, or non-wovens can be made from the spun fibers.

This Summary is provided to introduce some of the concepts in simplified form that are described later in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

The present invention is a textile fiber or web comprising a binary polymer composition, the binary polymer composition comprising cellulose acetate propio a first polymer that is polybutylene succinate (CAP) and a second polymer that is polybutylene succinate (PBS), the total amount of the first polymer and the second polymer being equal to the binary polymer composition A textile fiber or web that is at least 80% by weight of the above binary polymer composition, based on the total weight of the article.

The invention also relates to a textile material (fabric material) comprising said textile fiber or textile web.

Further, the present invention provides a method of making textile fibers or textile webs from a binary polymer composition comprising:
A binary polymer composition comprising at least a first polymer that is cellulose acetate propionate (CAP) and a second polymer that is polybutylene succinate (PBS), wherein the first polymer and the second obtaining a homogeneous polymer blend of a binary polymer composition wherein the total amount of the polymers of 2 is at least 80% by weight based on the total weight of the binary polymer composition;
a) forming said homogeneous polymer blend into textile fibers by a spinning process; or b) forming said homogeneous polymer blend into a textile web by a process for producing nonwoven materials.

The present invention involves a first polymer being cellulose acetate propionate (CAP) and a second polymer being polybutylene succinate (PBS) in the manufacture of textile fibers, textile webs and/or textile materials A binary polymer composition, wherein the total amount of the first polymer and the second polymer is at least 80% by weight, based on the total weight of the binary polymer composition. It also relates to the use of

The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments.

FIG. 1 shows a scanning electron micrograph of Example 1, a binary polymer composition suitable for the present invention, composed of 72.5% CAP and 27.5% PBS. FIG. 2 illustrates Example 4, a fiber made from a binary polymer composition according to the present disclosure. FIG. 3 shows a knitted fabric made from the fibers of Example 4, FIG.

Cellulose derivatives are used in textile fibers, but there are problems in the process of using them. Wet spinning and dry spinning processes require the use of hazardous solvents. Melt spinning processes require the use of large amounts of plasticizer and are problematic in process temperatures. Good elongation at break is very important, but it is difficult to obtain this with fibers from cellulose derivatives.

The present invention provides a solution to these problems.

The present invention provides new environmentally friendly high quality synthetic textile fibers and textiles with a binary polymer composition comprising cellulose acetate propionate (CAP) and a second polymer which is polybutylene succinate (PBS). Based on the knowledge that the web can be achieved.

According to one embodiment, the binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone ( PCL), polybutylene adipate (PBA), polyhydroxyalkanoate (polyhydroxyalkanoic acid, PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and any polyester containing sebacic acid and/or azelaic acid and/or dodecanedioic acid as dicarboxylic acids alone or in combination with terephthalic acid, and any combination thereof. Contains polymer.

Specifically, in the context of the present invention, CAP and a second polymer, PBS, form a homogeneous polymer mixture when the mixture is prepared by the methods disclosed herein, i.e., the two polymers It was observed that there was no phase separation between This is illustrated by FIG. 1 which shows an SEM (Scanning Electron Microscope) photograph of one embodiment of the invention (Example 1). This binary polymer composition has the potential to provide a high quality raw material for the production of textile fibers and textile webs with high tensile strength. Long textile fibers can be formed from strong fibers and fiber length is important to provide good spinning results. Textile fibers according to the present invention are expected to have a diameter/width ratio greater than 100:1. Furthermore, it is expected that the textile fibers according to the present invention will have good strength, uniformity, spinnability and durability.

The mechanical properties of the above binary polymer composition materials are close to commercial plastics used in the manufacture of fibers and nonwovens. Properties can also be modified (tuned) with additives. Processing temperatures in excess of 200°C can be used. It can be used in all fiber and nonwoven applications where thermoplastic properties are required. The melt flow index (MFI) of this binary polymer blend is also applicable to textile and nonwoven processing.

The material properties of the binary polymer composition are similar to those of PET. Higher elongations at break can also be achieved. Textile applications and weaving processes require high elongation at break.

Binary polymer compositions used in textile fiber or textile web applications can also be from recycled sources.

The molecular weight and molecular chain length can be selected to best meet the requirements of each fiber or nonwoven application. Mechanical properties and processability can be modified (tuned) by choosing longer or shorter polymer chains.

In order to obtain the desired effect, it is essential that the textile fibers and textile webs contain at least two polymers, a first polymer and a second polymer (binary polymer composition). According to one embodiment of the invention, the binary polymer composition comprises only two polymers and optionally additives.

The textile fibers and textile webs according to the invention can be particularly suitable for replacing textile materials made of PET (polyethylene terephthalate).

Synthetic PET fibers are widely used as materials for various textile products. Its uses include industrial textiles (textiles) and consumer textiles. The fibers and webs according to the invention may have high mechanical properties required for applications requiring high strength such as ropes, nets and automotive textiles. These are typically made of polyester and the fibers and webs of the present invention are believed to be suitable for these applications as an environmentally friendly, high quality alternative. Many types of clothing are produced from polyester, as are home and furnishing textiles including sheets, carpets and rugs, covers and curtains. Nonwovens, filters, and hygiene products are also produced from polyester. Fibers and webs according to the present invention may be suitable for all of the above applications.

PET has a relatively high carbon footprint and such fibers, webs and textiles are not environmentally friendly. Typically, PET is mostly made from fossil resources. Making PET products more sustainable is very difficult.

Thus, the present invention describes a new class of textile fibers and textile webs that can replace, for example, PET and PP in different types of fiber, yarn (twist, yarn), textile and nonwoven applications. In the tests carried out in connection with the present invention (described in more detail in the Examples), PET material was used as a reference.

Fibers and webs made from the binary polymer compositions presented herein have advantageous properties in tests conducted in connection with the present invention.

In particular, the binary polymer composition provides good elongation properties. These are measured by a tensile strain test. In this test, the elongation properties of the binary polymer composition were compared to PET. A similar PET grade is used in fiber manufacturing as plastic grade PET, which is one of the major recycled PET applications for plastic bottles (PET bottles) and the like. Tests carried out in connection with the present invention have shown that binary polymer compositions for textile fiber or textile web applications can withstand recycling well.

Also, materials according to the present invention based on the binary polymer compositions presented herein can be processed on the same fiber and web manufacturing equipment used with known materials such as PET fibers. This is beneficial because it does not require large investments in new equipment.

Additionally, fibers and webs made from the binary polymer compositions presented herein may have a lower environmental impact. This has been shown in tests. Their global warming potential is much lower and their renewable material (content) is much higher than that of eg PET.

One aim of the present invention is to achieve an environmentally friendly textile solution that can replace conventional synthetic textile materials based on fossil raw materials. Therefore, biopolymers are preferred in binary polymer compositions.

Biopolymers are polymers that are partially or wholly made from renewable resources. Another definition of biopolymer is a polymer that is biodegradable. It is sufficient if a biopolymer meets one of these definitions.

The present invention relates to textile fibers or textile webs comprising a binary polymer composition comprising a first polymer that is cellulose acetate propionate (CAP) and a second polymer that is polybutylene succinate (PBS). . The total amount of the first polymer and the second polymer is at least 80% by weight of the binary polymer composition, based on the total weight of the binary polymer composition.

According to one embodiment, the binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone ( PCL), polybutylene adipate (PBA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and Further polymers selected from the group consisting of any polyester containing sebacic acid and/or azelaic acid and/or dodecanedioic acid as dicarboxylic acids, alone or in combination with terephthalic acid, and any combination thereof.

According to one embodiment of the present invention, the binary polymer composition comprises first polymer in an amount of 5-95% by weight and 95-5% by weight, based on the total weight of the binary polymer composition. % of the second polymer.

According to one embodiment of the invention, the total amount of said first polymer and said second polymer is at least 80% by weight, or at least 85% by weight. Typically, the amount is at least 90% by weight, or at least 95% by weight, based on the total weight of the binary polymer composition, with the balance being other polymers and/or softeners, pigments, stabilizing agents. agents or other additives for use in plastic compositions.

According to one embodiment of the present invention, the binary polymer composition comprises the first polymer in an amount of 55-80 wt%, 60-75 wt%, or 65-75 wt%; %, 25-40% by weight, or 25-35% by weight of the second polymer.

According to one embodiment of the invention, the binary polymer composition comprises a recycled binary polymer composition comprising cellulose acetate propionate (CAP) and polybutylene succinate (PBS).

The invention also relates to a textile material comprising textile fibers or textile webs according to any of the embodiments described herein.

According to one embodiment of the invention, the textile material is fibres, yarns, textiles, fabrics, nonwovens, as well as apparel, household, industrial, technical, rope, net and automotive textiles, sheets, carpets and rugs. (carpets), home and furniture textiles, including covers and curtains, and textile products for one of the nonwoven applications, such as filters and hygiene products.

According to one embodiment of the invention, the textile material is recyclable.

Furthermore, the present invention relates to a method of producing textile fibers or textile webs from the binary polymer composition. The method of the present invention comprises:
A binary polymer composition comprising at least a first polymer that is cellulose acetate propionate (CAP) and a second polymer that is polybutylene succinate (PBS), wherein the first polymer and the second obtaining a homogeneous polymer blend of a binary polymer composition wherein the total amount of the polymers of 2 is at least 80% by weight based on the total weight of the binary polymer composition;
a) forming said homogeneous polymer blend into textile fibers by a spinning process; or b) forming said homogeneous polymer blend into a textile web by a process for producing nonwoven materials.

According to one embodiment of the method, the binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), Polycaprolactone (PCL), polybutylene adipate (PBA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST) ), and any polyester containing sebacic acid and/or azelaic acid and/or dodecanedioic acid as dicarboxylic acids, alone or in combination with terephthalic acid, and any combination thereof. include.

According to one embodiment, obtaining a homogeneous polymer blend is not done in a separate process, but in the same process as forming the blend into textile fibers or textile webs.

According to one embodiment of the present invention, the method of forming said homogeneous polymer blend into textile fibers is selected from the group consisting of wet spinning, dry spinning, melt spinning, extrusion spinning, direct spinning, gel spinning and electrospinning. It is performed by the spinning method used. Melt spinning and/or direct spinning are preferably used.

According to one very specific embodiment, the step of forming said homogeneous polymer blend into textile fibers is carried out by a melt spinning process, wherein the melt spinning temperature is 180-270°C. . The temperature may be 200-250°C, 210-230°C, or 215-225°C.

According to one very specific embodiment, the step of forming said homogeneous polymer blend into textile fibers comprises: by a melt spinning process using a melt spinneret having at least one through hole having a through hole diameter of . This diameter may be about 1 mm. The appropriate diameter of the spinneret depends on the desired quality of the fiber. In industrial melt spinning processes, spinnerets typically have any number of through-holes between 1 and 1000, such as 2-500 through-holes, or 5-50 through-holes. be able to.

According to one embodiment of the invention, forming the homogeneous polymer blend into a textile web is performed by meltblowing and/or spunbonding.

According to one embodiment of the invention, the step of obtaining said homogeneous polymer blend is carried out by melt mixing. Melt mixing is performed at a temperature of 200°C to 300°C. Preferably, the temperature is between 200°C and 270°C, between 210°C and 250°C, or between 210°C and 230°C.

According to one embodiment of the invention, obtaining a homogeneous polymer blend is performed by a recycling process.

The method may be used to obtain textile fibers or textile webs based on the binary polymer composition according to any one of the embodiments described herein.

The present invention involves a first polymer being cellulose acetate propionate (CAP) and a second polymer being polybutylene succinate (PBS) in the manufacture of textile fibers, textile webs and/or textile materials A binary polymer composition, wherein the total amount of the first polymer and the second polymer is at least 80% by weight, based on the total weight of the binary polymer composition. It also relates to the use of

According to one embodiment of use, the binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), poly Caprolactone (PCL), polybutylene adipate (PBA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST) and any polyester containing sebacic acid and/or azelaic acid and/or dodecanedioic acid as dicarboxylic acids alone or in combination with terephthalic acid, and further polymers selected from the group consisting of any combination thereof. .

According to one specific embodiment, the binary polymer composition comprises 5-95% by weight, preferably 10-90% by weight, more preferably 20-80% by weight, based on the total weight of the polymer composition. CAP in an amount of weight % and a second polymer in an amount of 5 to 95 weight %, preferably 10 to 90 weight %, more preferably 20 to 80 weight %.

According to one embodiment, a PBS is used, which has a range of 30,000-100,000 Da, typically 50,000-80,000 Da, or such as in the range of 60,000-70,000 Da. It has a number average molar mass.

According to one very specific embodiment, the binary polymer composition comprises CAP in an amount of 55 to 80 wt%, typically 60 to 75 wt%, or 65 to 75 wt% including. In that case, the composition comprises the second polymer in an amount of 20-40%, typically 25-40%, or 25-35% by weight. Weight percentages are based on the total weight of the composition. Optionally, the mixture contains at least one additive such as softeners, pigments, stabilizers and/or other additives for use in plastic compositions.

According to one very specific embodiment, the binary polymer composition comprises 60-80% by weight, typically 60-75% by weight, or 65-80% by weight, based on the total weight of the composition. CAP in an amount of 75% by weight and PBS in an amount of 20-40% by weight, typically 25-40% or 25-35% by weight, and optionally softeners, pigments, dyes, stabilizers, and/or at least one additive, such as other additives for use in plastic compositions, and/or other thermoplastic polymers compatible with CAP and PBS.

According to one embodiment, the binary polymer composition comprises at least one softening agent, such as triethyl citrate (TEC).

According to one specific embodiment, the CAP is between 15,000 and 120,000 Da, or between 30,000 and 110,000 Da, typically between 50,000 and 100,000 Da, or such as between 65,000 and 95 ,000 Da.

According to one specific embodiment, the CAP has an acetyl content of 0.8-2.0 wt%, or 1.0-1.5 wt%, and/or 30-51 wt%, or 40- It has a propionyl content of 50% by weight and/or a hydroxyl content of 1.0-2.5% by weight, or 1.5-2.0% by weight.

Suitably, when CAP is used, the number average molar mass of the CAP polymer is greater than 20,000 Da. According to one embodiment, this number average molar mass is between 30,000 and 110,000 Da, typically between 50,000 and 100,000 Da, or between 65,000 and 95,000 Da. This number average molar mass may be between 85,000 and 95,000 Da, or between 85,000 and 91,000 Da, such as 90,000 Da, 91,000 Da or 92,000 Da. A number average molar mass within the range specified above may provide a resilient material with mechanical properties that withstand processing and form durable textile fibers.

All number average molar mass measurements performed in connection with the present invention were determined using size exclusion chromatography (SEC) using a chloroform eluent for number average molar mass measurements. SEC measurements were performed using Styragel HR 4 and 3 columns with a pre-column, chloroform eluent (0.6 ml/min, T=30° C.). Elution curves were detected using a Waters 2414 refractive index detector. Molar mass distributions (MMD) were calculated for 10 PS (580-3040000 g/mol) standards using Waters Empower 3 software.

Different grades of cellulose esters such as cellulose acetate propionate are commercially available from several suppliers. In the disclosed binary polymer compositions, the polymer raw materials influence the properties of the mixture formed. In other words, the composite properties of multiple polymers need to be evaluated in forming the compositions of the present invention. For example, if one of the polymers has a high number average molar mass, such as 90,000 Da or 70,000 Da, it may be appropriate to combine this polymer with another polymer having a lower number average molar mass. Alternatively or additionally, higher amounts of softener may be used with polymers having high molar mass. A suitable number average molar mass depends on the end use of the composition, ie the most suitable cellulose ester grade may vary depending on the intended end use. Cellulose esters may have different grades of substitution. CAPs suitable for the compositions of the invention suitably have an acetyl content of 0.8 to 2.0 wt%, typically 1.0 to 1.5 wt%, eg 1.3 wt%. . CAPs suitable for compositions of the invention preferably have a propionyl content of 30 to 51% by weight. Typically the propionyl content may be 40-50% by weight. A very specific example is 48% by weight. CAPs suitable for the compositions of the present invention suitably have a hydroxyl content of 1.0 to 2.5 wt%, typically 1.5 to 2.0 wt%, such as 1.7 wt%. . In addition, the glass transition temperature is suitably 140-155°C, typically 142-152°C, eg 147°C.

According to one embodiment, when PBS is used, the PBS suitable for the composition of the present invention is 30,000-100,000 Da, typically 50,000-80,000 Da, or 60,000 Da. It has a number average molar mass in the range of ~70,000 Da. The number average molar mass of PBS may be, for example, 65,000 to 70,000 Da, such as 68,000 Da, 69,000 Da or 70,000 Da.

Melt flow index (or melt flow rate) is a measure of the melt flowability of a thermoplastic polymer or thermoplastic. Melt flow index can be used to characterize a polymer or polymer mixture. For polyolefins, namely polyethylene (PE, 190° C.) and polypropylene (PP, 230° C.), MFI is commonly used to indicate the magnitude of their melt viscosities. In a standard MFI measurement device, constant pressure creates shear stress that forces molten plastic through a mold. MFI is usually inversely proportional to molecular weight. MFI was measured at two temperatures, 215°C and 240°C, for the binary polymer composition embodiments tested in connection with the present invention. According to one very specific embodiment, the binary polymer composition has a weight of 6-8 g/10 min, preferably about 7 g/10 min, measured at 215° C. under a load of 2.16 kg, or 6.9 g/10 min, and/or a melt flow index of about 26-28 g/10 min, 27 g/10 min, or 27.1 g/10 min when measured at 240° C. with a 2.16 kg load.

According to one embodiment, a binary polymer composition suitable for the solution according to the invention comprises CAP and a second polymer, e.g. , and polybutylene succinate (PBS), polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone (PCL), polybutylene adipate ( PBA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and sebacic acid and/or dicarboxylic acid or any polyester containing azelaic acid and/or dodecanedioic acid alone or in combination with terephthalic acid, and in combination with another component selected from the list consisting of any combination thereof. According to one embodiment, the binary polymer composition also includes CAP and other similar polymers that are compatible with the second polymer, such as PBS.

The elongation and other mechanical properties of the above binary polymer compositions can also be modified with small amounts of additives to reach the required elongation and other properties. Accordingly, the binary polymer composition may also contain other ingredients such as additives commonly used in textile fibers or textile webs. These additives are, for example, softeners or plasticizers, fillers, auxiliaries, pigments, stabilizers or other agents. Typically, the amount of these additives varies between 0.01 and 10% by weight based on the weight of the binary polymer composition used in this invention. The amount of one additive may be, for example, 0.1-5% by weight, based on the total weight of the composition.

The solution according to the invention has several advantages. The most important are:
- To provide environmentally friendly synthetic textile materials, which are high quality materials manufactured from biopolymers and suitable for replacing conventional textile materials;
- providing a solution in which the manufacturing process of cellulose-based textile fibers or textile webs does not require the use of large amounts of toxic solvents or large amounts of plasticizers;
In addition, it can be made from food grade materials and thus can be used in food/medical products;
In addition, the material described solutions can be recycled by chemical and/or mechanical recycling methods, can contain recycled material, or can be made from recycled film; The potential to provide eco-friendly textile fibers or textile webs.

Reference will now be made in detail to various embodiments. An example of such an embodiment is illustrated in the accompanying drawings.

The following description discloses several embodiments in sufficient detail to enable those skilled in the art to make and use the embodiments based on the present disclosure. Not all steps or features of those embodiments have been discussed in detail because many of the steps or features will be apparent to those skilled in the art based on this specification.

For reasons of simplicity, in the following exemplary embodiments item numbers are maintained when elements are repeated.

FIG. 1 shows a scanning electron micrograph of Example 1, a binary polymer composition suitable for the present invention, composed of 72.5% CAP and 27.5% PBS.

FIG. 2 shows fibers made from this binary polymer composition.

FIG. 3 shows a knitted fabric made from the fibers of FIG.

The following raw materials were used in the examples. Tables 1-3 identify its properties.

Cellulose acetate propionate is
- Acetyl content 1.2% by weight,
・ Propionyl content 48% by weight,
・Hydroxyl content 1.7% by weight
had a degree of substitution of

Number-average molar mass (Mn) determinations were performed using size exclusion chromatography (SEC) using a chloroform eluent. For number-average molar mass measurements, samples (entries 1-4) were dissolved overnight with chloroform (1 mg/ml concentration). Samples were filtered with a filter (0.45 μm) before measurement.

SEC measurements were performed using Styragel HR 4 and 3 columns with a pre-column, chloroform eluent (0.6 ml/min, T=30° C.). Elution curves were detected using a Waters 2414 refractive index detector. Molar mass distributions (MMD) were calculated for 10 PS (580-3,040,000 g/mol) standards using Waters Empower 3 software.

The above materials will be described in more detail.

CAP is cellulose acetate propionate from Eastman, grades CAP-482-20, Treva Engineering Bioplastic GC6011 clear, Treva Engineering Bioplastic TR6012FPNAT Natural.

FZ91 is BioPBS FZ91PM from PTT MCC Biochem.

ES01G is Origo-Bi ES01G manufactured by Novamont.

4060D is Ingeo Biopolymer 4060D from NatureWorks.

Example 1 Preparation and Properties of Binary Polymer Mixtures Homogeneous mixtures of binary polymer compositions were formed into granules and films. A homogeneous polymer mixture was obtained by melt-kneading. Mixing was carried out at a temperature of 210-230° C. for a period of 30 seconds to 4 minutes.

A binary polymer blend consisting of 72.5% CAP and 27.5% PBS was made into a film. This film was treated with liquid nitrogen. Samples were fractured under liquid nitrogen to give the film a complete cross-sectional view. Cross-sectional observation by SEM reveals no microstructure and is homogeneous, indicating excellent miscibility of the polymer blend (Fig. 1).

Of particular importance is the breaking elongation of the material. This elongation is also called tensile strain. It can be measured against yield and rupture. The elongation to break of this binary polymer blend has been measured to be up to 97%.

For film applications, the elongation properties are much higher for the binary polymer blends than for PET films. Similar PET grades are used more than plastic grade PET in textile manufacturing, making this one of the major recycled PET applications such as plastic bottles.

The MFI (melt flow index) of binary polymer blends is suitable for fiber production at different temperatures.

Example 2 Fabrication of Fibers from Binary Polymer Mixtures Based on the tests (Example 1) conducted to evaluate the properties of the raw materials, binary polymer compositions containing CAP and PBS were prepared in various ways. It is expected that it can be processed into fibers.

According to one option, melt spun fibers could be produced.

For the production of melt-spun filaments of fibers using binary polymer compositions comprising CAP and PBS, off-the-shelf compounded binary polymers could be used and fed into the spinning process. Alternatively, the CAP polymer and PBS polymer could be fed separately directly to the spinning process.

The products based on the melt spinning process are fibers, from which different fiber and yarn products can be made. The yarn can also be woven or knitted into textiles and fabrics for various uses.

Example 3: Fabrication of nonwoven fabrics from binary polymer blends Based on the tests (Example 1) conducted to evaluate the properties of the raw materials, the binary polymer composition comprising CAP and PBS was produced at least through the meltblown process. and spunbond processes to form nonwoven fabrics.

An off-the-shelf compounded binary polymer could be used and fed into the web forming process. Alternatively, the CAP polymer and PBS polymer could be fed separately directly to the process.

The products and finished products from the meltblown and spunbond processes are nonwoven textiles.

Example 4: Melt Spinning Melt spinning was performed using a Fourne melt spinner (Fourne Polymertechnik GmbH, Germany). The melt spinning line consisted of a 10 mm single screw extruder, a metering pump and a melt spinneret with 8 through holes (1 mm diameter). The spinning temperature was set at 215°C.

After the spinneret, the as-spun fibers were directed through an ambient temperature quench duct. The melt-spun fibers were collected in skeins as spun. No orientation force was applied to the fibers.

The preparation of the fibers is presented in Table 8 and the properties of the fibers produced are presented in Table 9.

The fibers produced were translucent or white except for Blend 3, which had a beige, opaque tone. These fibers were soft and pleasant to the touch.

The fibers of Blend 1 (Figure 2) were used to make a knitted fabric (Figure 3).

Example 5 Production of Fibers from Recycled Blends Mixed film waste containing blends 1 and 2 (Table 8) with additives was fed into a shredder, then melted, extruded into further strands and pelletized. The granules obtained were clear and transparent.

The recycled granules were made into fiber products by a melt spinning machine.

Melt spinning was performed using a Fourne melt spinner (Fourne Polymertechnik GmbH, Germany). The melt spinning line consisted of a 10 mm single screw extruder, a metering pump and a melt spinneret with 8 through holes (1 mm diameter). The spinning temperature was set at 215°C.

After the spinneret, the as-spun fibers were directed through an ambient temperature quench duct. The melt-spun fibers were collected in skeins as spun. No orientation force was applied to the fibers.

The recycled blend was easy to process on the spinning machine and the fibers were easily recovered without breaking, indicating good recyclability of the blend.

The fiber production is presented in Table 10 and the properties of the fibers produced are presented in Table 11.

The fibers produced were translucent or white. The fibers were soft and pleasant to the touch.

It is obvious to those skilled in the art that as technology advances, the basic idea may be implemented in various forms. Embodiments are therefore not limited to the examples described above, but may vary within the scope of the appended claims.

The embodiments described herein may be used in any combination with each other. Some of the embodiments may be combined to form further embodiments. Any article, system, method, or use disclosed herein may include at least one of the embodiments described herein. It will be appreciated that the benefits and advantages described above may relate to one embodiment or may relate to multiple embodiments. Embodiments are not limited to solving any or all of the stated problems or having any or all of the stated advantages and advantages. It will be further understood that references to "a" item refer to one or more of that plurality of items. The term "comprising," as used herein, includes the feature(s) or act(s) listed before the term "comprising," without excluding the presence of one or more additional features or acts. Used to mean to have.

Claims (20)

A textile fiber or textile web comprising a binary polymer composition, said binary polymer composition comprising a first polymer that is cellulose acetate propionate (CAP) and a polybutylene succinate (PBS). and a second polymer, wherein the total amount of said first polymer and said second polymer is at least 80% by weight, based on the total weight of said binary polymer composition. fiber or textile web. The binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone (PCL), polybutylene adipate (PBA). ), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and as dicarboxylic acids sebacic acid and/or 2. A further polymer according to claim 1, characterized in that it comprises a further polymer selected from the group consisting of any polyester containing azelaic acid and/or dodecanedioic acid alone or in combination with terephthalic acid, and any combination thereof. textile fibers or textile webs. The binary polymer composition comprises, based on the total weight of the binary polymer composition,
the first polymer in an amount of 5 to 95% by weight;
The textile fiber or web according to claim 1 or claim 2, comprising said second polymer in an amount of 95-5% by weight. The total amount of said first polymer and said second polymer is at least 80%, at least 90%, or at least 95% by weight, based on the total weight of said binary polymer composition, with the balance being other and/or additives such as softeners, pigments, stabilizers or other additives for use in plastic compositions. A textile fiber or textile web as described. The binary polymer composition comprises the first polymer in an amount of 55-80 wt%, 60-75 wt%, or 65-75 wt% and 20-45 wt%, 25-40 wt%, or The textile fiber or web according to any one of the preceding claims, comprising said second polymer in an amount of 25-35% by weight. 6. The textile fiber or web of any one of claims 1 to 5, wherein said second polymer is PBS. 7. The textile fiber of any one of claims 1 to 6, comprising a recycled binary polymer composition comprising cellulose acetate propionate (CAP) and polybutylene succinate (PBS). textile web. A textile material comprising a textile fiber or textile web according to any one of claims 1 to 7. fibres, yarns, textiles, fabrics, nonwovens, and home and furnishing textiles, including apparel, household, industrial, technical, rope, netting and automotive textiles, sheets, carpets and rugs, covers and curtains, and 8. A textile material according to claim 7, characterized in that it is selected from the group consisting of textile products for one of the nonwoven applications, such as filters and hygiene products. 9. Textile material according to claim 7 or 8, characterized in that it is recyclable. A method for producing textile fibers or textile webs from a binary polymer composition comprising the steps of:
A binary polymer composition comprising at least a first polymer that is cellulose acetate propionate (CAP) and a second polymer that is polybutylene succinate (PBS), wherein said first polymer and said obtaining a homogeneous polymer blend of a binary polymer composition wherein the total amount of second polymer is at least 80% by weight based on the total weight of said binary polymer composition;
a) forming said homogeneous polymer blend into textile fibers by a spinning process, or b) forming said homogeneous polymer blend into a textile web by a process for producing nonwoven materials. . A spinning method wherein the step of forming said homogeneous polymer blend into textile fibers is selected from the group consisting of wet spinning, dry spinning, melt spinning, extrusion spinning, direct spinning, gel spinning and electrospinning, preferably melt spinning and 12. A method according to claim 11, characterized in that it is carried out/or by direct spinning. The step of forming the homogeneous polymer blend into textile fibers is performed by a melt spinning method, wherein the melt spinning temperature in the melt spinning method is 180-270°C, 200-250°C, or 210-230°C. 13. The method of claim 12, wherein The step of forming the homogeneous polymer blend into textile fibers forms at least one through-hole having a through-hole diameter of 0.1-2 mm, 0.5-1.5 mm, or 0.8-1.2 mm. 14. The method of claim 13, wherein the method is performed by a melt spinning method using a melt spinneret having a melt spinneret. The binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone (PCL), polybutylene adipate (PBA). ), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and as dicarboxylic acids sebacic acid and/or 12, characterized in that it comprises a further polymer selected from the group consisting of any polyester containing azelaic acid and/or dodecanedioic acid, alone or in combination with terephthalic acid, and any combination thereof. 15. A method according to claim 13 or claim 14. 16. A method according to any one of claims 12 to 15, wherein forming the homogeneous polymer blend into a textile web is performed by meltblowing and/or spunbonding. wherein said step of obtaining a homogeneous polymer blend is performed by melt mixing, said melt mixing being performed at a temperature of 200°C to 300°C, 200°C to 270°C, 210°C to 250°C, or 210°C to 230°C; 17. A method according to any one of claims 12-16. 18. A method according to any one of claims 12 to 17, characterized in that obtaining a homogeneous polymer blend is carried out by a recycling process. A first polymer that is cellulose acetate propionate (CAP) and a second polymer that is polybutylene succinate (PBS) in the manufacture of textile fibers, textile webs and/or textile materials, or any combination thereof A binary polymer composition comprising a polymer, wherein the total amount of said first polymer and said second polymer is at least 80% by weight based on the total weight of said binary polymer composition. use of the system polymer composition. The binary polymer composition comprises polypropylene succinate (PPS), polybutylene succinate adipate (PBSA), polybutylene adipate terephthalate (PBAT), polylactic acid (PLA), polycaprolactone (PCL), polybutylene adipate (PBA). ), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), polyethylene furanoate (PEF), polybutylene terephthalate (PBT), polybutylene succinate terephthalate (PBST), and as dicarboxylic acids sebacic acid and/or 20. Use according to claim 19, comprising a further polymer selected from the group consisting of any polyester containing azelaic acid and/or dodecanedioic acid alone or in combination with terephthalic acid, and any combination thereof.

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