THERMOPLASTIC STARCH COMPOSITION, PREPARATION METHOD THEREFOR, AND USE THEREOF

One embodiment of the present invention provides a thermoplastic starch composition comprising starch, a plasticizer, a first compatibilizer, a second compatibilizer, a biodegradable polymer and a reaction initiator. At least a part of the starch and the biodegradable polymer, which are constituent...

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Bibliographische Detailangaben
Hauptverfasser: KIM, Hak Jun, HUR, Sung hwa, HAM, Choong Hyun
Format: Patent
Sprache:eng ; fre ; kor
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Zusammenfassung:One embodiment of the present invention provides a thermoplastic starch composition comprising starch, a plasticizer, a first compatibilizer, a second compatibilizer, a biodegradable polymer and a reaction initiator. At least a part of the starch and the biodegradable polymer, which are constituent components of the thermoplastic starch composition, according to the present invention, are in a state of being chemically bonded by means of a grafting reaction mediated by the first compatibilizer. At least a part of the starch, which is a constituent component of the thermoplastic starch composition, according to the present invention, chemically binds to the second compatibilizer so as to have a form in which a hydrophobic functional group is introduced. A biodegradable film can be manufactured by extruding a biodegradable composition in which the thermoplastic starch composition and the biodegradable polymer are uniformly mixed, and the manufactured biodegradable film has excellent mechanical properties. Un mode de réalisation de la présente invention concerne une composition thermoplastique d'amidon, comprenant de l'amidon, un plastifiant, un premier agent de compatibilité, un deuxième agent de compatibilité, un polymère biodégradable et un initiateur de réaction. Au moins une partie de l'amidon et du polymère biodégradable, qui sont des constituants constitutifs de la composition thermoplastique d'amidon, selon la présente invention, sont dans un état lié chimiquement au moyen d'une réaction de greffage médiée par le premier agent de compatibilité. Au moins une partie de l'amidon, qui est un constituant constitutif de la composition thermoplastique d'amidon, selon la présente invention, se lie chimiquement au deuxième agent de compatibilité de manière à présenter une forme dans laquelle un groupe fonctionnel hydrophobe est introduit. Un film biodégradable peut être fabriqué par extrusion d'une composition biodégradable dans laquelle la composition thermoplastique d'amidon et le polymère biodégradable sont mélangés uniformément et le film biodégradable fabriqué présente d'excellentes propriétés mécaniques. 본 발명의 일 예는 전분, 가소제, 제1상용화제, 제2상용화제, 생분해성 고분자 및 반응 개시제를 포함하는 열가소성 전분 조성물을 제공한다. 본 발명에 따른 열가소성 전분 조성물의 구성성분인 전분 및 생분해성 고분자는 적어도 일부가 제1상용화제를 매개로 한 그래프트 반응에 의해 화학적으로 결합된 상태로 존재한다. 본 발명에 따른 열가소성 전분 조성물의 구성성분인 전분은 적어도 일부가 제2상용화제와 화학적으로 결합하여 소수성 관능기가 도입된 형태로 존재한다. 상기 열가소성 전분 조성물과 생분해성 고분자가 균일하게 혼합된 생분해성 조성물을 압출하면 생분해성 필름의 제조가 가능하고, 제조된 생분해성 필름은 우수한 기계적 물성을 가진다.