功能化石墨烯制备及其改性大豆蛋白膜性能研究
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- 英文论文题名：Preparation of Functional Graphene and its Application in Soy-based Biofilms
- 论文作者：陈惠 ; 高强 ; 张伟 ; 张世锋 ; 李建章
- 英文论文作者：Hui Chen ; Qiang Gao ; Wei Zhang ; Shifeng Zhang ; Jianzhang Li ; College of Materials Science and Technology ; Beijing Forestry University
- 年：2016
- 作者机构：北京林业大学材料科学与技术学院;
- 论文关键词：石墨烯 ; 大豆蛋白 ; 可降解生物膜
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十三分会：绿色化学
- 语种：中文
- 分类号：TQ127.11;TB484
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十三分会 ; 绿色化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：141k
- 原文格式：D
- 会议级别：全国
摘要
以石油为原材料的塑料包装产品在给人们生活带来便利的同时,也暴露越来越多的环境问题。迫切需要研究环境友好型包装材料和可生物降解膜从而改善这一状况。以天然植物蛋白大豆分离蛋白(SPI)为原料的可降解膜材料自身存在韧性差、强度低和耐水性差等缺点,对其进行改性处理十分必要。本研究以大豆蛋白为原料,通过制备功能化石墨烯纳米片,对大豆蛋白可降解生物膜改性,成功实现了大豆蛋白膜机械强度和耐水性能的提高,以及气体透过率的显著降低。进一步深入研究了石墨烯改性大豆分离蛋白膜机理,揭示了高分子内部网络互穿结构和共轭电子对蛋白晶型的影响。
Petroleum-based plastics are presenting more and more concerns since they are non renewable and non biodegradable. To solve these problems, soy protein isolate(SPI) has attracted more attention. However, SPI-based films possess some weaknesses involving brittleness and poor water resistance. So the modification of SPI is of great importance. Water-soluble graphene nanosheets capped with a vegetable protein, soy protein isolate(SPI), are designed and synthesized for regulation of the rigidity and flexibility of bio-films. The special bio-films from SPI modified by graphene exhibit better mechanical property, better hydrophobic property and lower water vapor permeability, oxygen and nitrogen permeability. The mechanism of graphene-modified SPI film was further discovered. Effects of the polymer network structure and the conjugated electrons on the crystal structure of SPI was revealed.
Petroleum-based plastics are presenting more and more concerns since they are non renewable and non biodegradable. To solve these problems, soy protein isolate(SPI) has attracted more attention. However, SPI-based films possess some weaknesses involving brittleness and poor water resistance. So the modification of SPI is of great importance. Water-soluble graphene nanosheets capped with a vegetable protein, soy protein isolate(SPI), are designed and synthesized for regulation of the rigidity and flexibility of bio-films. The special bio-films from SPI modified by graphene exhibit better mechanical property, better hydrophobic property and lower water vapor permeability, oxygen and nitrogen permeability. The mechanism of graphene-modified SPI film was further discovered. Effects of the polymer network structure and the conjugated electrons on the crystal structure of SPI was revealed.
引文
[1]Li,K.;Chen H.;Li,Y.;Li,J.;He,J.RSC Adv.2015,5:66543.
[2]Li,Y.;Chen H.;Dong,Y.;Li,K.;Li,L.;Li,J.Ind.Crop.Prod.2016,82:133.
[2]Li,Y.;Chen H.;Dong,Y.;Li,K.;Li,L.;Li,J.Ind.Crop.Prod.2016,82:133.