文章摘要
杨孟楠,徐进,袁久刚,王平,范雪荣,高卫东.淀粉分子磁化修饰及其再生膜材料制备[J].精细化工,2021,38(7):
淀粉分子磁化修饰及其再生膜材料制备
Magnetization modification of starch molecules and preparation of regenerated membrane materials
投稿时间:2020-12-23  修订日期:2021-02-22
DOI:
中文关键词: 高直链淀粉  磁化分子修饰  点击化学  再生膜结构设计  机械性能调控
英文关键词: High amylose starch  Modification of magnetized molecules  Click chemistry  Structure design of regenerated membrane  Control of mechanical properties
基金项目:国家自然科学基金(21674043);中国博士后基金项目(No. 2019M651711);国家重点研发计划(2017YFB0309200)
作者单位E-mail
杨孟楠 江南大学 纺织服装学院 纺织研究所 1759273256@qq.com 
徐进 江南大学 纺织服装学院 纺织研究所 jinxu@jiangnan.edu.cn 
袁久刚 江南大学 纺织服装学院 纺织研究所  
王平 江南大学 生态纺织教育部重点实验室  
范雪荣 江南大学 纺织服装学院 纺织研究所  
高卫东 江南大学 纺织服装学院 纺织研究所  
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中文摘要:
      以高直链淀粉(HS)为原料,通过“还原胺化-点击化学法”在其还原性端的潜在醛基上进行磁化分子修饰,得到具有磁性的变性淀粉(MMS),并在外磁场作用下制备再生淀粉膜。具体包括在HS分子唯一的潜在醛基上引入炔基,对四氧化三铁粒子(MNP)进行硅烷包覆得到叠氮化磁体粒子(azide-MNPs),两者经点击化学反应得到分子链末端带磁的变性淀粉。借助XRD、FTIR、NMR和MALDI-TOF MS对产物进行结构表征,结果表明,磁体粒子精准接枝到高直链淀粉分子还原末端,得到目标产物MMS。再生淀粉膜性能测试结果表明,在外磁场诱导条件下MMS逐渐趋于分子有序排列,制得的再生淀粉膜较纯CMS淀粉膜断裂伸长提升49.5%,断裂强度提升88.3%,短程有序程度提高。该文为基于外加磁场下的淀粉再生膜结构设计和力学性能调控提供了新思路。
英文摘要:
      The reducing end of high amylose starch (HS) is modified with magnet particles by "Borch reduction -Click chemistry" to obtain modified starch with magnetic properties and prepare a regenerated starch film under the external magnetic field. The experiment includes the following steps, alkyne groups are introduced into unique reductive end of HS molecule, at the same time, Fe3O4 magnet nanoparticles(MNP) are coated with silane to obtain azidated magnet particles(azide-MNPs). Finally, the modified starch (MMS) with magnetic terminal is obtained through Click chemistry reaction. The successful formation of MMS was confirmed by XRD, FTIR, NMR and MALDI-TOF MS, etc. Furthermore, the mechanical properties of the regenerated starch film were tested, and the results showed that MMS gradually tended to be arranged in an orderly manner under the conditions of magnetic field induction. The resulting regenerated starch film had a increased breaking elongation and breaking strength, and improved short-range order. This study provides a new idea for the structural design and mechanical properties control of starch regeneration membranes based on an external magnetic field.
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