NL2031172B1 - Biodegradable filament and method of producing biodegradable filament - Google Patents

Biodegradable filament and method of producing biodegradable filament Download PDF

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Publication number
NL2031172B1
NL2031172B1 NL2031172A NL2031172A NL2031172B1 NL 2031172 B1 NL2031172 B1 NL 2031172B1 NL 2031172 A NL2031172 A NL 2031172A NL 2031172 A NL2031172 A NL 2031172A NL 2031172 B1 NL2031172 B1 NL 2031172B1
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Netherlands
Prior art keywords
biodegradable
biodegradable polymer
filament according
filament
stabilizer
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NL2031172A
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Dutch (nl)
Inventor
Krins Bastiaan
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Senbis Group B V
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Priority to NL2031172A priority Critical patent/NL2031172B1/en
Priority to PCT/NL2023/050107 priority patent/WO2023172130A1/en
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Publication of NL2031172B1 publication Critical patent/NL2031172B1/en

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

The invention relates to a biodegradable filament made of a biodegradable polymer composition and a method of producing such filament. The biodegradable polymer composition according to the invention comprises a first biodegradable polymer, a second biodegradable polymer and a plurality of additives which enhance at least the abrasion resistance of the filament such that the biodegradable filament is competitive to conventional filaments.

Description

Biodegradable filament and method of producing biodegradable filament
The invention relates to a biodegradable filament. The invention also relates to a method of producing such biodegradable filament.
The global demand for biodegradable polymers is large and increasing.
Biodegradable polymers have a major advantage over nonbiodegradable polymers in terms of degradation because of their ability to completely break down when exposed to microorganisms, aerobic-, and/or anaerobic processes. Plastic pollution is still found everywhere, which is, as commonly known, highly undesired from environmental point of view. The removal of plastic from the environment is labour and cost intensive, wherefore usage of biodegradable polymers could not only benefit from environmental point of view but also if we look at costs of labour used for the removal of conventional plastics from the environment. Further, it must be taken into account that the removal of all plastic from the environment is a challenge, for example when it comes to microplastics. The use of biodegradable polymers would provide a solution here as the decomposition and degradation of the biodegradable polymers could even stabilize the environment and could for example also increase the longevity of the landfills by decreasing the garbage volume. Reprocessing of biodegradable polymers into for example oligomers via microbial, enzymatic, and/or hydrolytic treatment is also conceivable. A non-limiting example of a product which is difficult to remove from the environment and whereof conventional non-biodegradable products could take hundreds of years to decompose is string trimmer line which is used in mowing applications. One is working on the development of fully biodegradable siring trimmer lines, but such development faces several challenges. A commonly known challenge in the production of products made from biodegradable plastics is to provide a product which is equivalent with or could replace conventional polymers. Consumers are typically unlikely to replace their conventional plastics by biodegradable alternatives in case the alternative is inferior.
Hence, there is a desire to develop biodegradable products, such as biodegradable filaments, which are competitive with conventional polymers.
The invention provides thereto a biodegradable filament made of a biodegradable polymer composition, said biodegradable polymer composition comprising at least one first biodegradable polymer, at least one second biodegradable polymer, at least one stabilizer, in particular at least one thermal stabilizer and/or at least one chain extender, preferably at least one polymeric chain extender.
The biodegradable filament according to the present invention benefits of being substantially fully biodegradable whilst having material properties which are competitive with conventional, non-biodegradable, filaments. The biodegradable polymer composition comprising at least one first biodegradable polymer and at least one second biodegradable polymer provides a stable base structure for the filament. It was found that it is beneficial to use a composition of at least two biodegradable polymers, preferably at least two different biodegradable polymers, in order to improve the characteristics of the composite such as the processability, the resistance to impact and/or abrasion and/or resilience behaviour. However, solely the use of a composition of at least two biodegradable polymers was found to be not sufficient to produce a biodegradable filament which is fully competitive with conventional filaments. The invention teaches to use both a stabilizer and a (polymeric) chain extender, which is against any conventional polymer improvement theories and techniques and unexpectedly resulted in a filament having extraordinary material properties. Stabilizers are known to typically improve the stability, in particular the thermal stability, of the polymer composition. This is beneficial to keep the polymer stable during for example the spinning process, thereby preventing for example thermal degradation or thermo-oxidative degradation. The use of at least one stabilizer prevents clogging and/or the development of lumps and/or nodes on the filament. Chain extenders are known to react with polymers and to modify polymers, in particular polycondensation polymers. Chain extenders can for example be configured to increases molecular weight and melt strength, to improve hydrolytic stability, processability and/or polycondensation. The chain extender could also function as a compatibilizer.
Whilst one would expect that the combination of a stabilizer and a chain extender in a biodegradable polymer composition would result in both additives hampering or even counteracting another, it was surprisingly found that this combination could lead to further improvements of the final product, in particular the filament. The biodegradable polymer according to the present invention in particular benefits of having an improved impact resistance and an improved resilience and of a relatively good processability in conventional extrusion and/or spinning processes.
The biodegradable filament according to the present invention could for some application even fully replace a filaments produced from traditional polymers, such as nylon or polyethylene.
When it is referred to a stabilizer, it could also be referred to a first additive, in particular a first additive configured to adapt the thermal stability of the polymer composition. When it is referred to a chain extender, it could also be referred to a is second additive, in particular a second additive which is configured for (polymeric) chain extension. The chain extender is in particular a polymeric chain extender and/or a chain extender for polycondensates. The chain extenders according to the present invention could also be referred to as compatibilizer and/or as a branching agent. it is also conceivable that at least one first biodegradable polymer and/or at least one second biodegradable polymer is at least partially compostable.
In a preferred embodiment, at least one first biodegradable polymer is a biodegradable polyester. lt is also conceivable that at least one second biodegradable polymer is a biodegradable polyester. At least one biodegradable polyester can for example be an aliphatic polyester and/or a semi-aromatic polyester. Hence, it is conceivable that at least one first biodegradable polyester is an aliphatic polyester and/or that at least one first biodegradable polyester is a semi-aromatic polyester. it is also conceivable that at least one second biodegradable polyester is an aliphatic polyester and/or that at least one second biodegradable polyester is a semi-aromatic polyester.
The biodegradable polymer composition may comprises at least one polymer matrix. it is conceivable that at least one first biodegradable polymer forms a polymer matrix. In a preferred embodiment, at least one second biodegradable polymer is an impact modifier. it is also conceivable that at least one second biodegradable polymer is configured to improve durability and/or toughness and/or resilience of the polymer composition. it is also conceivable that the biodegradable polymer composition comprises at least two polymer matrices.
In a preferred embodiment, the biodegradable polymer composition comprises in the range of 10 wi% to 90 wi% of a first biodegradable polymer. Preferably, the biodegradable polymer composition comprises in the range of 20 wi% to 80 wi%, more preferably in the range of 30 wt®% to 70 wi®%, even more preferably in the range of 40 wi®% to 60 wi% of a first biodegradable polymer. It is also conceivable that the biodegradable polymer composition comprises in the range of 10 wi®% to 90 wi%, in particular in the range of 20 wt®% to 80 wi%, more in particular in the range of 30 wt% to 70 wi%, even more preferably in the range of 40 wt% to 60 wi% of a second biodegradable polymer. In a preferred embodiment, the biodegradable polymer composition comprises in the range of 60 wt% to 80 wi%, in particular 65 wi% fo 75 wi%, of a first biodegradable polymer and/or the biodegradable polymer composition comprises in the range of 20 wi% to 40 wi%, in particular 25 wi% to 35 wi%, of a second biodegradable polymer.
At least one first biodegradable polymer is preferably chosen from the group of: polybutylene adipate terephthalate (PBAT), polybutylene succinate terephthalate (PBST), poly butylene succinate (PBS), poly(butylene succinate-co-butylene adipate) (PBSA), polybutylene ethylene adipate succinate (PBEAS), polyhydroxyalkanoates (PHAs) such as polyhydroxybutyrate (PHB), poly(3- hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and/or poly(3-hydroxybutyrate-co-3- hydroxyhexanoate) (PHBH). At least one second biodegradable polymer can also be chosen from the group of: polybutylene adipate terephthalate (PBAT), polybutylene succinate terephthalate (PBST), polybutylene succinate (PBS), poly(butylene succinate-co-butylene adipate) (PBSA), polybutylene ethylene adipate succinate (PBEAS), polyhydroxyalkanoates (PHAs) such as polyhydroxybutyrate (PHB), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and/or poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH). As indicated above, it is preferred that the first biodegradable polymer at least partially differs from the second biodegradable polymer.
In a beneficial embodiment of the filament according to the present invention, the first biodegradable polymer comprises PBS and the second biodegradable polymer comprises PBAT. lt is also possible that the first biodegradable polymer is
PBS and the second biodegradable polymer is PBAT. This embodiment is in particular of interest as it was found that the PBAT can function as an impact modifier for the PBS.
In a further possible embodiment, it is conceivable that the biodegradable polymer composition comprises at least one biodegradable copolymer, wherein said copolymer comprises at least one first biodegradable polymer and at least one 5 second biodegradable polymer. It is imaginable that at least part of the first biodegradable polymer and the second biodegradable polymer convert info a copolymer under the influence of the chain extender. However, copolymer formation could possibly also at least partially explained by transesterification.
At least one stabilizer as applied in the present invention is preferably a thermal stabilizer. lt is beneficial if the biodegradable polymer composition comprises at least 0.1 wi% stabilizer. Yet in a further embodiment, it is conceivable that the biodegradable polymer composition comprises at least 0.2 wt®%, preferably at least 0.3 wt% stabilizer, more preferably at least 0.4 wi% stabilizer. However, it is also conceivable that the biodegradable polymer composition comprises at least 0.5 wit% stabilizer or at least 0.6 wt% stabilizer. Optionally, the biodegradable polymer composition could comprise at most 5 wit% stabilizer, preferably at most 1.5 wi% stabilizer, more preferably at most 1 wt%.
In a beneficial embodiment, at least one stabilizer comprises a phenolic antioxidant. itis preferred that said phenolic antioxidant is a sterically hindered phenolic antioxidant. The sterically hindered embodiment could further improve the desired effects of the stabilizer. A non-limiting example a commercial stabilizer which could be applied would be Irganox 1010. lt was experimentally found that already relatively low fractions of stabilizer and relatively low fractions of chain extender could significantly improve the characteristics of the biodegradable filament according to the present invention.
This means that fractions of said additives can typically be added to a conventional (extrusion) process, without having to significantly adapt the process. The use of relatively low fractions of additives is also beneficial from economic point of view.
At least one chain extender is preferably a polymeric chain extender, more in particular a chain extender for polycondensates. A non-limiting example of a commercially available chain extender which can be applied is Joncryl, for example but not limited to Joncryl ADR 4468.
The biodegradable polymer composition preferably comprises at least 0.1 wt% chain extender. lt is also possible that the biodegradable polymer composition comprises at least 0.2 wi%, in particular at least 0.25 wi%, more in particular atleast 0.3 wi% and even more in particular at least 0.4 wi% chain extender. It is preferred to limit the amount of chain extender in order to prevent undesired effects of the additive. It is conceivable that an excess of chain extender will cause too much crosslinking of the polymers and/or an excessive entanglement among the molecular chains. Hence, preferably the biodegradable polymer composition comprises a maximum of 5 wi% chain extender, preferably at most 2.5 wi% chain extender, more preferably at most 1 wi% chain extender, and even more preferably at most 0.8 wt®% chain extender. It is also conceivable that the biodegradable polymer composition comprises up to 0.5 wt% chain extender.
In a further preferred embodiment, it is conceivable that the characteristics of the filament are further adapted by the use of fibers. Hence, it is conceivable that the biodegradable polymer composition comprises a fraction of fibers, in particular natural fibers. It is conceivable that at least a fraction of fibers, in particular natural fibers, is dispersed within the polymer composition. The fibers could have a positive effect on the abrasion resistance of the filament. The fibers could also have a reinforcing effect for the filament. It is beneficial if at least part of the fibers, if applied, has an average length in the range of 75 to 300 micron. ft is for example conceivable that at least a fraction of the fibers has an average length of at least 75 micron, preferably at least 100 micron. Preferably, at least part of the fibers, if applied, has a length to diameter ratio of 3 or higher. Relatively elongated fibers could further improve the characteristics of the filament. Non-limiting example of possible fibers which could be applied are jute fibers and/or cellulosic fibers such as micro-cellulose fibers. Other non-limiting examples of fibers which could be applied for a biodegradable filament according to the present invention are cotton, flax, hemp, kenaf, bamboo, sisal and/or coconut fibers.
The diameter of the filament according to the present invention can for example be in the range of 0.5 to 5 mm, preferably in the range of 1 to 4 mm. The filament can be a substantially round filament. However, it is also conceivable that the filament is a oval or substantially flat shaped filament.
In yet a further possible embodiment, the biodegradable polymer composition comprises at least one third biodegradable polymer. it is for example possible that at least one third biodegradable polymer is chosen from the group of: PBAT, PBST,
PBS, PBSA, PBEAS, PHB, PHBV and/or PHBH. in case a third biodegradable polymer is applied, said third biodegradable polymer preferably at least partially differs from the first and second biodegradable polymer. The biodegradable polymer composition could for example comprise at least 10 wt% of a third biodegradable polymer, in particular at least 20 wt®%. It is conceivable that the biodegradable polymer composition comprises up to 40 wi%, preferably up to 30 wi®% of a third biodegradable polymer. It was experimentally found that the use of a third biodegradable polymer could prevent or inhibit the formation of cracks in the material. The biodegradable polymer composition could also comprises at least one further additive, such as for example a colorant.
The biodegradable filament according to the present invention is typically obtained via an extrusion process. The biodegradable filament is preferably an extruded filament. It is in particular beneficial if the filament is made using a twin screw extruder. Alternatively a compound could be made using a twin screw extruder process, and subsequently the filament could be made in a process with a single screw extruder. The biodegradable filament according to the present invention is in particular a monofilament. Alternatively, the biodegradable polymer composition according to the present invention could also be applied in a biodegradable multifilament.
The invention also relates to the use of a biodegradable filament according the present invention. The relates in particular to the use of a biodegradable filament according the present invention for use as a string trimmer line, as artificial turf or artificial grass, (tooth)brush filament and/or as packaging material.
The invention also relates to a product comprising a biodegradable filament according to the present invention. Non-limiting examples of products are string trimmer line, artificial turf or artificial grass, (tooth)brush filament and/or packaging material.
The invention further relates to a method of producing a biodegradable filament, in particular according to the present invention, comprising the steps of: a) providing: o at least one first biodegradable polymer; o at least one second biodegradable polymer; o at least one stabilizer; and o at least one chain extender; b) feeding a mixture of at least one first biodegradable polymer, at least one second biodegradable polymer, at least stabilizer and at least one chain extender to an extruder; and c) extruding the mixture such that a biodegradable filament is formed.
The method according to the present invention enables the production of a substantially fully biodegradable filament. The produced filament benefits of the characteristics as described for the biodegradable filament according to the present invention. Any of the compositions, fractions and/or materials as described for the filament according to the invention also apply to the method according to the invention. The extrusion step is preferably performed by a twin screw extruder. it will be clear that the invention is not limited to the exemplary embodiments which are described here, but that countless variants are possible within the framework of the attached claims, which will be obvious to the person skilled in the art. In this case, it is conceivable for different inventive concepts and/or technical measures of the above-described variant embodiments to be completely or partly combined without departing from the inventive idea described in the attached claims.
The verb 'comprise’ and its conjugations as used in this patent document are understood to mean not only ‘comprise’, but to also include the expressions ‘contain’, ‘substantially contain’, formed by’ and conjugations thereof.

Claims (25)

ConclusiesConclusions 1. Biodegradeerbaar filament gemaakt van een biodegradeerbare polymeersamenstelling, voornoemde biodegradeerbare polymeersamenstelling omvattende: - tenminste één eerste biodegradeerbaar polymeer; - tenminste één tweede biodegradeerbaar polymeer; - tenminste één stabilisator; en - tenminste één ketenverlenger.1. Biodegradable filament made from a biodegradable polymer composition, said biodegradable polymer composition comprising: - at least one first biodegradable polymer; - at least one second biodegradable polymer; - at least one stabilizer; and - at least one chain extender. 2. Biodegradeerbaar filament volgens conclusie 1, waarbij tenminste één eerste biodegradeerbaar polymeer een biodegradeerbare polyester is en/of waarbij tenminste één tweede biodegradeerbaar polymeer een biodegradeerbare polyester is.2. Biodegradable filament according to claim 1, wherein at least one first biodegradable polymer is a biodegradable polyester and/or where at least one second biodegradable polymer is a biodegradable polyester. 3. Biodegradeerbaar filament volgens conclusie 2, waarbij tenminste één biodegradeerbare polyester een alifatische polyester is en/of waarbij tenminste één biodegradeerbare polyester een semi-aromatische polyester is.3. Biodegradable filament according to claim 2, wherein at least one biodegradable polyester is an aliphatic polyester and/or where at least one biodegradable polyester is a semi-aromatic polyester. A4. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij de biodegradeerbare polymeersamenstelling een eerste biodegradeerbaar polymeer omvat in het bereik van 10 wt®% tot 90 wt%, in het bijzonder in het bereik van 20 wt®% tot 80 wt%, meer in het bijzonder in het bereik van 30 wt% tot 70 wt%.A4. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable polymer composition comprises a first biodegradable polymer in the range of 10 wt®% to 90 wt%, in particular in the range of 20 wt®% to 80 wt%, more in particular in the range of 30 wt% to 70 wt%. 5. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij de biodegradeerbare polymeersamenstelling een tweede biodegradeerbaar polymeer omvat in het bereik van 10 wt®% tot 90 wt%, met name in het bereik van 20 wt% tot 80 wi%, specifieker in het bereik van 30 wt®% tot 70 wt®%.5. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable polymer composition comprises a second biodegradable polymer in the range of 10 wt% to 90 wt%, in particular in the range of 20 wt% to 80 wt%, more specifically in the range from 30 wt®% to 70 wt®%. 6. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij tenminste één eerste biodegradeerbaar polymeer wordt gekozen uit de groep van: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV en/of PHBH.6. Biodegradable filament according to any one of the preceding claims, wherein at least one first biodegradable polymer is selected from the group of: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV and/or PHBH. 7. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij tenminste één tweede biodegradeerbaar polymeer wordt gekozen uit de groep van: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV en/of PHBH.7. Biodegradable filament according to any one of the preceding claims, wherein at least one second biodegradable polymer is selected from the group of: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV and/or PHBH. 8. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij het eerste biodegradeerbare polymeer PBS is en waarbij het tweede biodegradeerbare polymeer PBAT is.8. Biodegradable filament according to any one of the preceding claims, wherein the first biodegradable polymer is PBS and wherein the second biodegradable polymer is PBAT. 9. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij de biodegradeerbare polymeersamenstelling tenminste één biodegradeerbaar copolymeer omvat, waarbij voornoemd copolymeer bestaat uit tenminste één eerste biodegradeerbaar polymeer en tenminste uit één tweede biodegradeerbaar polymeer.9. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable polymer composition comprises at least one biodegradable copolymer, wherein said copolymer consists of at least one first biodegradable polymer and at least one second biodegradable polymer. 10. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij tenminste één stabilisator een thermische stabilisator is.10. Biodegradable filament according to any one of the preceding claims, wherein at least one stabilizer is a thermal stabilizer. 11. Biodegradeerbaar filament volgens één der voorgaande conclusies, omvattende tenminste 0.1 wt®% stabilisator, bij voorkeur tenminste 0.2 wt%, bij nadere voorkeur tenminste 0.3 wi%.11. Biodegradable filament according to any one of the preceding claims, comprising at least 0.1 wt% stabilizer, preferably at least 0.2 wt%, more preferably at least 0.3 wt%. 12. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij tenminste één stabilisator een fenolische antioxidant omvat, bij voorkeur een sterisch gehinderde fenolische antioxidant.12. Biodegradable filament according to any one of the preceding claims, wherein at least one stabilizer comprises a phenolic antioxidant, preferably a sterically hindered phenolic antioxidant. 13. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij tenminste één ketenverlenger een polymere ketenverlenger is.13. Biodegradable filament according to any one of the preceding claims, wherein at least one chain extender is a polymeric chain extender. 14. Biodegradeerbaar filament volgens één der voorgaande conclusies, omvattende tenminste 0.1 wt% ketenverlenger, bij voorkeur tenminste 0.2 wt%, bij nadere voorkeur tenminste 0.3 wt®%.14. Biodegradable filament according to any one of the preceding claims, comprising at least 0.1 wt% chain extender, preferably at least 0.2 wt%, more preferably at least 0.3 wt%. 15. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij de biodegradeerbare polymeersamenstelling een fractie van vezels omvat, in het bijzonder natuurlijke vezels.15. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable polymer composition comprises a fraction of fibers, in particular natural fibers. 16. Biodegradeerbaar filament volgens conclusie 15, waarbij tenminste een deel van de vezels een gemiddelde lengte in het bereik van 75 tot 300 micron heeft.A biodegradable filament according to claim 15, wherein at least some of the fibers have an average length in the range of 75 to 300 microns. 17. Biodegradeerbaar filament volgens conclusie 15 of 16, waarbij tenminste een deel van de vezels een lengte tot diameter ratio van 3 of hoger heeft.17. Biodegradable filament according to claim 15 or 16, wherein at least some of the fibers have a length to diameter ratio of 3 or higher. 18. Biodegradeerbaar filament volgens één van conclusie 15 tot 17, waarbij tenminste een deel van de vezels jute vezels en/of micro-cellulose vezels zijn.18. Biodegradable filament according to any one of claims 15 to 17, wherein at least part of the fibers are jute fibers and/or micro-cellulose fibers. 19. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij de biodegradeerbare polymeersamenstelling tenminste één derde biodegradeerbaar polymeer omvat.19. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable polymer composition comprises at least one third biodegradable polymer. 20. Biodegradeerbaar filament volgens conclusie 19, waarbij tenminste één derde biodegradeerbaar polymeer wordt gekozen uit de groep van: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV en/of PHBH.20. Biodegradable filament according to claim 19, wherein at least one third biodegradable polymer is selected from the group of: PBAT, PBST, PBS, PBSA, PBEAS, PHB, PHBV and/or PHBH. 21. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij het biodegradeerbare filament verkregen wordt via een extrusieproces.21. Biodegradable filament according to any one of the preceding claims, wherein the biodegradable filament is obtained via an extrusion process. 22. Biodegradeerbaar filament volgens één der voorgaande conclusies, waarbij het filament een monofilament is.22. Biodegradable filament according to any one of the preceding claims, wherein the filament is a monofilament. 23. Gebruik van een biodegradeerbaar filament volgens één der voorgaande conclusies.23. Use of a biodegradable filament according to any one of the preceding claims. 24. Werkwijze voor het produceren van een biodegradeerbaar filament, in het bijzonder volgens één van de conclusies 1 tot 22, omvattende de stappen van: a) het verschaffen van: o tenminste één eerste biodegradeerbaar polymeer; o tenminste één tweede biodegradeerbaar polymeer; o tenminste één stabilisator; en o tenminste één ketenverlenger; b) het voeden van een mengsel van tenminste één eerste biodegradeerbaar polymeer, tenminste één tweede biodegradeerbaar polymeer, tenminste één stabilisator en tenminste één ketenverlenger aan een extruder; en c) het extruderen van het mengsel zodanig dat een biodegradeerbaar filament wordt gevormd.A method for producing a biodegradable filament, in particular according to any one of claims 1 to 22, comprising the steps of: a) providing: o at least one first biodegradable polymer; o at least one second biodegradable polymer; o at least one stabilizer; and o at least one chain extender; b) feeding a mixture of at least one first biodegradable polymer, at least one second biodegradable polymer, at least one stabilizer and at least one chain extender to an extruder; and c) extruding the mixture such that a biodegradable filament is formed. 25. Werkwijze volgens conclusie 24, waarbij de extrusiestap wordt uitgevoerd door een dubbele schroef extruder.A method according to claim 24, wherein the extrusion step is performed by a twin screw extruder.
NL2031172A 2022-03-07 2022-03-07 Biodegradable filament and method of producing biodegradable filament NL2031172B1 (en)

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NL2031172A NL2031172B1 (en) 2022-03-07 2022-03-07 Biodegradable filament and method of producing biodegradable filament
PCT/NL2023/050107 WO2023172130A1 (en) 2022-03-07 2023-03-06 Biodegradable filament and method of producing biodegradable filament

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