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公开(公告)号：KR1020130103154A
公开(公告)日：2013-09-23
申请号：KR1020120024561
申请日：2012-03-09
Applicant: 충남대학교산학협력단
CPC classification number: C08L23/12 , B29C47/00 , C08K3/042 , C08K7/02 , C08K2201/004 , C08L23/26 , C08L67/04 , C08L2666/06
Abstract: PURPOSE: A polypropylene-polylactic acid mixed resin/graphene/natural fiber bionanocomposite is provided to remarkably improve mechanical properties such as tensile strength, flexural strength, and impact strength by uniformly dispersing graphene and natural fiber due to the addition of a compatibilizer. CONSTITUTION: A bionanocomposite includes a polypropylene-polylactic acid mixed resin, a compatibilizer, graphene, and natural fiber. The propylene is selected from a propylene homopolymer, the copolymer of a (C2-18)α-olefin and propylene, or a mixture thereof. The polylactic acid one or more selected from poly-L-lactic acid, poly-D-lactic acid, or poly-L,D-lactic acid each of which number average molecular weight is 10,000-100,000. The compatibilizer is maleic anhydride-grafted-polypropylene. The amount of the maleic anhydride included is 0.1-5.0 wt% with regard to the compatibilizer.
Abstract translation: 目的：提供聚丙烯 - 聚乳酸混合树脂/石墨烯/天然纤维复合材料，通过添加增容剂，均匀分散石墨烯和天然纤维，显着提高拉伸强度，抗弯强度和冲击强度等机械性能。 构成：生物聚合物包括聚丙烯 - 聚乳酸混合树脂，增容剂，石墨烯和天然纤维。 丙烯选自丙烯均聚物，（C2-18）α-烯烃和丙烯的共聚物或其混合物。 选自数均分子量为10,000〜10000的聚-L-乳酸，聚-D-乳酸或聚-L，D-乳酸中的一种以上的聚乳酸。 增容剂是马来酸酐接枝聚丙烯。 所涉及的马来酸酐的量相对于增容剂为0.1-5.0重量％。
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公开(公告)号：KR101068499B1
公开(公告)日：2011-09-29
申请号：KR1020090005552
申请日：2009-01-22
Applicant: 충남대학교산학협력단
Abstract: 본 발명은 높은 팽윤도와 기계적 강도를 갖는 온도 및 pH 감응형 하이드로젤의 제조방법에 관한 것으로, 보다 상세하게는 마이크로캡슐을 제조하는 단계; 상기 마이크로캡슐을 가교하여 IPN(interpenetrating polymer network) 하이드로젤을 제조하는 단계;를 포함하여 제조되는 온도 및 pH 감응형 하이드로젤 제조방법에 관한 것이다. 본 발명에 따른 온도 및 pH 감응형 하이드로젤은 센서, 스위치와 같은 엑추에이터, 약물전달제, 보형물, 인공 피부 및 인공 근육 등에 사용할 수 있다.
마이크로캡슐, IPN, 하이드로젤, 약물전달제-
公开(公告)号：KR1020100086273A
公开(公告)日：2010-07-30
申请号：KR1020090005552
申请日：2009-01-22
Applicant: 충남대학교산학협력단
CPC classification number: A61K47/6903 , A61K9/06 , A61K9/5031 , A61K47/58
Abstract: PURPOSE: A method for manufacturing temperature and pH sensitive hydrogel is provided to ensure high mechanical strength and to use for an actuator such as sensor or switch, drug carrier, prosthesis, and artificial skin and muscle. CONSTITUTION: A method for manufacturing temperature and pH sensitive hydrogel comprises: a step of preparing microcapsule; a step of polymerizing and crosslinking the microcapsule, to obtain IPN(interpenetrating polymer network) hydrogel. The crossliking is performed by reacting polyvinyl alcohol and poly N-isopropyl acrylamide with crosslinking agent.
Abstract translation: 目的：提供一种制造温度和pH敏感水凝胶的方法，以确保高机械强度，并用于诸如传感器或开关，药物载体，假体和人造皮肤和肌肉的致动器。 构成：制备温度和pH敏感水凝胶的方法包括：制备微胶囊的步骤; 聚合和交联微胶囊的步骤，获得IPN（互穿聚合物网络）水凝胶。 通过聚乙烯醇和聚N-异丙基丙烯酰胺与交联剂反应进行交叉检验。
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