US20070251021A1 - Amylose Starch Products as Sizing Agents for Textile Yarns - Google Patents

Amylose Starch Products as Sizing Agents for Textile Yarns Download PDF

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US20070251021A1
US20070251021A1 US10/594,689 US59468905A US2007251021A1 US 20070251021 A1 US20070251021 A1 US 20070251021A1 US 59468905 A US59468905 A US 59468905A US 2007251021 A1 US2007251021 A1 US 2007251021A1
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starch
amylose
sizing
yarn
type starch
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Holger Schopke
Thomas Servay
Henk Meijer
Zhijian Xue
Dominik Winter
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BASF Plant Science GmbH
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BASF Plant Science GmbH
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Assigned to BASF PLANT SCIENCE GMBH reassignment BASF PLANT SCIENCE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEIJER, HENK JAAP, SCHOPKE, HOLGER, SERVAY, THOMAS, WINTER, DOMINIK, XUE, ZHIJIAN
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/11—Starch or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof

Definitions

  • the invention relates to the use of native chemically unmodified amylose-type starch as sizing agent for natural and/or synthetic textile yarns and textile blended yarns as well as to a process for sizing textile yarns using these starch products.
  • the invention furthermore relates to the use of chemically modified amylose-type starch as sizing agent for natural and/or synthetic textile yarns and textile blended yarns as well as to a process for sizing textile yarns using chemically modified amylose-type starch products.
  • Woven fabrics are two-dimensional bodies consisting of fibers in the form of threads intersecting at right angles (the warp and weft), produced using the shed-forming method. Whereas each weft thread is stressed only briefly as it is placed in position, the warp threads undergo repeated stress during each insertion of the weft and at each change of shed. The warp threads undergo stress in the form of yarn—metal abrasion when the weft thread is pushed by the reed, by yarn—yarn abrasion during the change of shed, and by cyclic stretching processes.
  • the warp threads are normally unable to withstand these, extreme stresses, and must therefore be provided with a protective coating—the, sizing agent—that adheres to the fiber, forming an abrasion-resistant, elastic film.
  • the sizing agents With staple fiber yarns, the sizing agents have the task of making the yarn resistant to the frictional processes that take place during weaving. Protruding fibers are caused to adhere to the main body of the yarn, thereby preventing neighboring warp threads from catching or entangling.
  • the overall increase in the tensile strength of the thread of about 20% is of minor importance, but the increase in strength at the weakest points is crucial.
  • the sizing agent must adhere strongly to the fiber, and its film properties should be largely independent of the climatic conditions, especially atmospheric humidity, and be unaffected by fiber finishes and sizing additives.
  • the elongation of the warp thread should not be reduced by presence of the sizing agent.
  • the task of the sizing agent is complete. As it would usually have a deleterious effect on subsequent finishing processes, it must be completely removed. Removal is simple in the case of cold-water-soluble sizing agents, but starch products that are insoluble in cold water require preliminary enzymatic or oxidative breakdown before the desizing stage. The removal of the sizing agent may pose special wastewater treatment problems in finishing plants.
  • a large number of classes of chemical substances are used as sizing agents. They can be divided into two main groups
  • the sizing agent to be used must satisfy different requirements, such as good penetrativeness, good adhesiveness, good film-forming properties and the ability to form an elastic sizing film.
  • a suitable sizing agent imparts to the sized yarn desirable properties, such as a high wear resistance (abrasion resistance), a high weaving efficiency and good washing-out properties of the woven textile product.
  • Starch and its derivatives are therefore the most important class of sizing agents with respect to total consumption. This is because of their low price, good sizing effect, and worldwide availability.
  • the raw material basis of this class of sizing materials is naturally occurring starch, a polysaccharide based on ⁇ -D-glucopyranose.
  • Starch is not a single chemical substance, but is composed of two structurally different polymers: amylose and amylopectin.
  • Amylose consists of chains of glucose units linked by ⁇ -1,4-glucosidic bonds, whereas amylopectin additionally contains ⁇ -1,6-glucosidic bonds which cause branching of the polymer chain, see J. A.
  • Amylopectin is the main constituent of starch, making up 73 to 86% of the total, depending on the type of starch.
  • the degree of polymerisation of amylopectin is about 6000 to 10 6 glucose units, that of amylose about 100 to 1000 glucose units.
  • the most important sizing agents are potato, maize, and tapioca starches. Wheat, rice, and sago starches are also used. The characteristic properties of these starches are determined by the amylose/amylopectin ratio, the degree of polymerization of these two constituents, and the size and fine structure of the starch grain. These parameters determine the swelling and solution behavior, and also the properties of the film.
  • Natural starch is insoluble in cold water because of the hydrogen bonds linking parallel polymer chains.
  • the starch is brought into “solution” by heating.
  • the starch grains first absorb water until swelling is at its maximum. Above a certain temperature, characteristic for each type of starch and known as the gelatinization temperature, the starch grains burst and form a gel.
  • the viscosity increases to a maximum, and then decreases asymptotically to a limiting value as the solubilized polymer molecules disperse.
  • Complete solubilization of the individual molecules of a starch grain only occurs above 100° C.
  • the viscosity value is important in size application, as it has a considerable effect on the amount of liquor pickup.
  • starch pastes solidify to a pulpy mass.
  • This retrogradation is caused by stretching of the molecular chains, parallel alignment of the chains, and formation of hydrogen bonds between neighboring chains, with loss of water of hydration (Tegge, 1984).
  • This retrogradation has detrimental effects on the sizing agent, leading to poor storage properties, skin formation, formation of deposits on the rollers, and reduced adhesive strength. Therefore, natural starches are increasingly being replaced by starch derivatives.
  • Native potato starch e.g. consists of about 80% amylopectin (I) and 20% amylose (II).
  • Both polymers are present in granules, which are insoluble in water at room temperature.
  • the hydrogen bonds between the amylopectin and amylose chains become weaker and are finally replaced by interactions (hydrogen bonds) with water molecules.
  • the granules start to swell and water molecules penetrate into the starch.
  • amylopectin is viscosity stable, while amylose has a high tendency to gel. During this gel formation the amylose forms double helices, which then aggregate and form threedimensional networks.
  • starch derivatives All modified starches that have lost their original properties are referred to as starch derivatives. These include thin-boiling starches, dextrins, starch esters, and starch ethers.
  • Thin-boiling starches are produced by acid hydrolysis or oxidative degradation in aqueous suspension, and dextrins are produced by thermal depolymerization, usually in the presence of acids. They gelatinize at low temperatures, give solutions of low viscosity, and can be dissolved in high concentrations. Furthermore, it is easier to produce a liquor with a predetermined viscosity, and the tendency to retrogradation is considerably reduced.
  • the starch esters mainly used in sizing materials are those of phosphoric acid (the phosphate starches) and acetic acid (the acetyl starches). These starch derivatives are usually not only esterified, but also depolymerized, giving lower liquor viscosities and decreased retrogradation. In general, they give better sizing effects than thin-boiling starches.
  • starch ethers The three most important types of starch ethers are the hydroxyethyl, hydroxypropyl, and carboxymethyl starches, produced by reaction of starch with ethylene oxide, propylene oxide, and chloracetic acid or sodium chloroacetate in the presence of caustic soda, respectively.
  • the degree of substitution of these starch derivatives is generally about 0.1 or less. Because of its ionic character, sodium carboxymethyl starch is soluble in cold water and therefore does not require enzymatic desizing. Also, the starch ethers have a better sizing effect than starch derivatives that are simply depolymerized.
  • the mechanical properties of films cast from solutions of starch or starch derivatives depend on the degree of hydration (which depends on the relative humidity of the atmosphere in the weaving mill) and on the ratio of amylose to amylopectin and type of modified starch.
  • starch and starch derivatives are used which consist either exclusively or principally of starch or starch derivatives.
  • Starch and its derivatives adhere relatively strongly to cotton, see J. Trauter, M. Laupichler, Melliand Textilber. 57 (1976) 375, 443, 545, 615, 713, 797, 875, 979; 58 (1977) 23, 111.
  • Cotton yarns woven on high-speed looms or yarn blends with a high proportion of synthetic fiber must be sized with sizing formulations that contain additionally carboxymethyl cellulose, poly(vinyl alcohol), or poly(meth)-acrylates to improve the sizing effect. Starches are detected by the blue coloration with iodine, and this reaction is also used for the semiquantitative determination of residual size content (P. Wurster, G. Schmidt, Melliand Textilber. 68 (1987) 581).
  • this object is achieved by using amylose-type starch with an amylose content of at least 50% as sizing agent.
  • Amylose type potato starch with an amylose content of about 70% produced by transgenic potato plants as described in example 1 was formulated as described in example 2 and tested as sizing agent as described in example 3. Furthermore the desizing properties were analysed, see example 3.
  • the formulations with amylose-type starch from genetically modified potato plants produced as described in example 1 and having an amylose content of about 70% display a significant increase in sizing performance as reflected from the higher abrasion resistance as well as the better desizing properties achieved.
  • comparable properties with chemically unmodified amylose-type starch were obtained.
  • high amylose starch refers to any starch or starch fraction containing at least about 50% by weight amylose. Exemplary thereof are “Nepol” amylose (the amylose fraction of corn starch); “Superlose” (the amylose fraction of potato starch); “Amylomaize” or Amylon” (high amylosic corn starch with about 54% amylose); and Amylomaize VII (high amylose corn starch containing about 73.3% amylose). Amylomaize VIII with an amylose content of around 85% can also be used.
  • the starch can be of any origin, for example, corn, wheat, potato, waxy corn, tapioca, sago or rice.
  • a typical sizing composition can be prepared by mixing 100 pounds of an amphoteric starch prepared in accordance with this invention with 100 gallons of water, preferably with the addition of five pounds of petroleum wax, and then heating to the gelatinization temperature.
  • the thread or yarn to be sized for example, a thread or yarn containing 65% polyester fiber (polyethylene glycol terephthalate), and 35% cotton fibers, is then sized by passing it through this composition.
  • the number of yards of woven material between changes of loom stops can be increased.
  • the sizing material can be removed by treatment with enzymes in the usual manner or by washing with a detergent water.
  • compositions of the invention can also be employed in other uses, for example, in the finishing of textiles, in dyeing textiles and paper, in the sizing of paper, in the application of pigments or coatings to cloth and paper.
  • Sizing of 65% polyethylene glycol terephthalate, 35% combed cotton yarn, rayons, and yarns of other synthetic fibers or blends thereof with e.g. but not limited to natural fibers, such as cotton, wool can be carried out by using amylose-type starch with an amylose content of at least 50% as sizing agent according to the invention.
  • amylose Due to its linearity, amylose has the potential to form flexible films, with excellent functionality for sizing of yarns. Important is to prevent gelling in this process, because this will lead to insoluble films and shrinking due to crystallisation. Therefore amylose is substituted with hydroxyethyl-, hydroxypropyl- or carboxymethyl groups, so that amorphous, highly soluble films result or amylose is mixed with poly(meth)acrylate sizes to prevent retrogradation after the usual cooking procedure.
  • amylose-type potato starch preferably by using chemically unmodified or modified amylose-type potato starch as sizing agent for natural and/or synthetic textile yarns.
  • amylose-type potato starch preferably by using chemically unmodified or modified amylose-type potato starch as sizing agent for natural and/or synthetic textile yarns.
  • the potato starch granules isolated from potato tubers usually contain about 20% amylose and 80% amylopectin (wt. %, based on the dry substance).
  • amylose wt. %
  • amylopectin wt. %, based on the dry substance.
  • successful efforts have been made to breed, through genetic modification, potato plants that form starch granules in the potato tubers, which consist as to more than 50 wt. % (based on the dry substance) of amylose, preferably more than 70 wt. % of amylose, most preferably more than 90 wt. % of amylose.
  • GBSS granule-bound starch synthase
  • SBE1 starch branching enzyme 1
  • SBE2 starch branching enzyme 2
  • Elimination or inhibition of the expression of the SBE1 and SBE2 genes in potato plants especially in the tubers is also possible by the use of antisense technology, see example 1.
  • the method of genetic modification of the potato has been described in the patent applications WO92/11375, WO 97/20040, WO 92/14827, WO 95/26407 and WO 96/34968 and the patents U.S. Pat. No. 5,856,467 U.S. Pat. No. 6,169,226, U.S. Pat. No. 6,469,231, U.S. Pat. No. 6,215,042, U.S. Pat. No. 6,570,066 and U.S. Pat. No. 6,103,893.
  • amylose-type potato starch is herein understood to mean the potato starch granules isolated from potato tubers, having an amylose content of at least 50 wt. % based on the dry substance.
  • Chemically modified amylose-type starches are herein understood to mean amylose-type starch products obtained by chemically modifying amylose-type starch through acid modification, oxidation, esterification, etherification, graft polymerization and/or crosslinking. Before, during or after the chemical modification a physical modification (for instance, through roller drying, extrusion or a heat-moisture treatment) or an enzymatic modification of the amylose-type starch may also be carried out. Methods for preparing the various chemically modified starches have been described in the book O.B. Wurzburg (Ed. Modified Starches: Properties and Uses; CRC Press Inc. Boca Raton, Fla., 1986. These methods can also be used for preparing chemically modified amylose-type potato starch used according to the invention as sizing agent.
  • Aqueous solutions of amylose-type starch as sizing agents may be made in the conventional manner, for instance in open or closed boiling apparatus.
  • the treatment of the textile yarns with the aqueous solutions of chemically modified amylose-type potato starch products according to the invention can be carried out by the methods conventional for sizing yarns.
  • the yarns can, for instance, be passed continuously through a solution of the sizing agent, or a solution of the sizing agent may be applied to the yarn by spraying or by means of a roller.
  • the layer of yarn is pressed out, for instance between two rollers. Then the pressed-out yarns are dried on heated cylinders or by means of hot air.
  • the invention relates to a process for sizing textile yarns.
  • yarns is herein understood in the most general sense and is deemed to comprise all cotton threads or cotton staple yarns occurring in the textile industry. They may consist of continuous natural cotton threads or of cotton fibers and/or semisynthetic cotton and polyester blends and be twisted or not twisted.
  • a typical sizing composition can be prepared by mixing 100 pounds of an amphoteric starch prepared in accordance with this invention with 100 gallons of water, preferably with the addition of five pounds of petroleum wax, and then heating to the gelatinization temperature.
  • the thread or yarn to be sized for example, a thread or yarn containing 65% polyester fiber (polyethylene glycol terephthalate) and 35% cotton fibers, is then sized by passing it through this composition.
  • An alternative sizing agent can be prepared by adding neutralized (e.g. with ammonia or sodium hydroxide) poly(meth)acrylate-based emulsion polymers to the starch containing sizing formulation.
  • a preferred copolymer composition (weight %) of the poly(meth)acrylate polymers is in the range of:
  • the sizing bath is preferably kept at a temperature of from 30 to 90° C.
  • the concentration of the sizing agent in the sizing bath is preferably between 2 and 20 wt. %.
  • the amount of sizing agent absorbed by the yarn (absorption; weighting) is preferably between 2 and 30 wt. % of sizing agent (dry substance) based on yarn (dry substance).
  • the sizing solutions to be used may further contain slight amounts of auxiliary substances conventional in the sizing process, such as waxes, fats, antifoaming agents, antistatic agents and plasticizers.
  • the sizing solutions may additionally contain other sizing agents, such as polyvinyl alcohol, poly(meth)acrylates or carboxymethyl cellulose.
  • the number of yards of woven material between changes of loom stops can be increased.
  • the sizing material can be removed by treatment with enzymes in the usual manner or by washing with a detergent water.
  • compositions of the invention can also be employed in other uses, for example, in the finishing of textiles, in dyeing textiles and paper, in the sizing of paper, in the application of pigments or coatings to cloth and paper.
  • High amylose potato lines can be produced for example by using antisense, RNAi or antibody technology that target the two starch branching enzymes starch branching enzyme 1 (SBE1) and starch branching enzyme 2 (SBE2).
  • SBE1 starch branching enzyme 1
  • SBE2 starch branching enzyme 2
  • the high amylose potato line AM99-2003 is produced by inhibition of the starch branching enzyme activities in the parental line Dinamo. Transformation is made with a construct of SBE1 and SBE2 in antisense orientation driven by the gbss promoter.
  • the nucleic acid sequence of the gbss promoter is published in EP 0 563 189.
  • pBluescript containing a 1620 bp fragment of the 3′end of Sbe1 between EcoRV and SpeI is cut open with SpeI (blunt) and XbaI and ligated with a 1243 bp SstI (blunt) and XbaI fragment of the 3′end of Sbe2.
  • the Sbe2 and Sbe1 complex is cut out with EcoRV and XbaI and ligated to the SmaI and XbaI opened up binary vector pHo3.1.
  • the final vector is named pHAbe12A, see FIG. 1 and nucleic acid sequence SEQ ID NO 1. pHo3.1 is based on pGPTVKan (Becker, D.
  • the parental line Dinamo is transformed with the construct pHAbe12A and transgenic lines were selected as described in U.S. Pat. No. 6,169,226.
  • Transgenic lines were grown and analysed for amylose production according to the method as described by Morrison, W. R. and Laignelet, B., J. Cereal Sci. 1(1983), 9-20.
  • Transgenic lines producing amylose-type starch with an amylose content of 70% and more were selected.
  • Amylose type starch was isolated and purified from transgenic potato plants according to common methods known in starch industry.
  • a formulation containing the above mentioned amylose-type potato starch was produced according to the following recipe: recipe 1 2 3 Water (g) 860 860 860 PHAS 2012 (g) 70 Native potato starch (g) 70 Emsize E9 70 BASF Size CE 70 70 70 Sum (g) 1000 1000 1000 Refractometer ° Brix 6.8 8.2 7.8 Viscosity (fordcup, second) 33 25 13 “PHAS 2012” is genetic modified amylose-type potato starch, solid content 83.5% (moisture containing 16.5%); the amylose content is 70% measured according to the method as described by Morrison, W. R. and Laignelet, B., J. Cereal Sci.
  • “Native potato starch” is normal potato starch (Emsland rifle GmbH, Germany) without any (chemical or thermal) modification, solid content 84.7% (moisture containing 15.3%) comprising about 20% amylose and 80% amylopectin; “BASF Size CE” (BASF Aktiengesellschaft, Germany) is a polyacrylate based sizing agent, solid content 25%; “Emsize E9” is a sizing agent based on a chemically modified potato starch (propoxylated, degree 0.2 to 0.3/per repeating unit). Solid content is around 85% (moisture containing 15%).
  • the above recipe of size liquor can principally vary from 100% starch (low performance required) to 100% poly(meth)acrylate (high performance required).
  • poly(meth)acrylate based size is added to starch size in a ratio between 10 (starch):1 (poly(meth)acrylate) to 1:1.
  • amylose-type starch (recipe 1: PHAS 2012) was tested against native potato starch (recipe 2) as well as against the best commercially available starch-sizing-product (recipe 3: Emsize E9), which is based on a chemically modified starch (propoxylated, degree 0.2 to 0.3/per repeating unit). All starch components were formulated with “BASF size CE”. The abrasion resistance and the desizing properties were determined.
  • the sizing effect is of decisive importance for the weaving properties of a warp yarn. This effect is closely connected with the abrasion resistance of the sized yarn.
  • a standard, readily exchangeable abrasive paper is tensioned over a shaft that moves in line with the direction of the threads. Twenty, weighted threads (cotton staple yarn English count Ne12) are laid over the shaft and abraded at the same speed and under the same pressure until they break. To ensure that fibrous deposits in the abrasive do not affect the abrasive action, the shaft is advanced after each stroke. The number of abrasive strokes withstands before breaking is read off from a counter, and the average figure calculated. The higher the abrasion number obtained, the higher the abrasion resistance of the yarn.
  • Abrasion account numbers (cotton yarn, Ne 12) Recipe unsized 1 2 3 Size loading (solid to solid, %) 7.7 7.6 7.5 Abrasion account number (20) 263 1752 1416 1728 Abrasion account number (5) 185 1001 868 998
  • One of the commonest test methods for determining the effect of pretreatment is to detect the presence of starch sizes by dabbing the fabric with a solution of iodine/potassium iodide. A blue coloration indicates that starch size is still present on the fabric.
  • a remedy is offered by the TEGEWA violet scale, which embraces nine shades denoted by ratings. A rating of 1 indicates poorest desizing; and of 9 practically complete desizing.
  • the formulations with amylose-type starch from genetically modified potato plants produced as described in example 1 and having an amylose content of about 70% display a significant increase in sizing performance as reflected from the higher abrasion resistance as well as the better desizing properties achieved.
  • comparable properties with the chemically unmodified amylose-type starch were obtained.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
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EP04007877.6 2004-04-01
PCT/EP2005/003301 WO2005098121A1 (en) 2004-04-01 2005-03-30 Amylose starch products as sizing agents for textile yarns

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US20120183491A1 (en) * 2009-06-18 2012-07-19 Omikenshi Co., Ltd. Iodine- and amylose-containing fibers, method for production thereof, and use thereof
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CN104790211A (zh) * 2015-04-17 2015-07-22 诸城市奥尼生物科技有限公司 一种中温纺织上浆方法
CN112279929A (zh) * 2020-11-18 2021-01-29 河南省科学院化学研究所有限公司 一种冷水可溶的醚化高直链玉米淀粉及其制备方法

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US20120183491A1 (en) * 2009-06-18 2012-07-19 Omikenshi Co., Ltd. Iodine- and amylose-containing fibers, method for production thereof, and use thereof
US9206531B2 (en) * 2009-06-18 2015-12-08 Kanto Natural Gas Development Co., Ltd. Iodine- and amylose-containing fibers, method for production thereof, and use thereof
WO2015066405A1 (en) * 2013-10-31 2015-05-07 Archer Daniels Midland Company Methods for distressing fabrics or garments using polysaccharide particles
US10450685B2 (en) 2013-10-31 2019-10-22 Archer Daniels Midland Company Methods for distressing fabrics or garments using polysaccharide particles
CN104790211A (zh) * 2015-04-17 2015-07-22 诸城市奥尼生物科技有限公司 一种中温纺织上浆方法
CN112279929A (zh) * 2020-11-18 2021-01-29 河南省科学院化学研究所有限公司 一种冷水可溶的醚化高直链玉米淀粉及其制备方法

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