两亲性乙基纤维素接枝松香聚合物的合成及自组装

doi:10.16085/j.issn.1000-6613.2018-1838

化工进展 ›› 2019, Vol. 38 ›› Issue (03): 1476-1481.DOI: 10.16085/j.issn.1000-6613.2018-1838

两亲性乙基纤维素接枝松香聚合物的合成及自组装

程增会^1,²(),王基夫¹,张代晖¹,王春鹏¹,储富祥¹(),许凤²

1. 中国林业科学研究院林产化学工业研究所；生物质化学利用国家工程实验室；国家林业局林产化学工程重点开放性实验室；江苏省生物质能源与材料重点实验室，江苏南京210042
2. 北京林业大学材料科学与技术学院，北京 100083

收稿日期:2018-09-11 修回日期:2018-12-11 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: 储富祥
作者简介:程增会（1986―），女，博士研究生，研究方向为生物质高分子材料。E-mail：chengzenghuia@163.com。|储富祥，研究员，博士生导师，研究方向为生物质高分子材料。E-mail：chufuxiang@caf.ac.cn。
基金资助:
中央级公益性科研院所基本科研业务费专项(CAFYBB2017ZF003)

Synthesis and self-assembly of amphiphilic ethyl cellulose grafted dehydroabietic moiety polymer

Zenghui CHENG^1,²(),Jifu WANG¹,Daihui ZHANG¹,Chunpeng WANG¹,Fuxiang CHU¹(),Feng XU²

1. Institute of Chemical Industry of Foresty Products, CAF; National Engineering Laboratory of Biomass Chemical Utilization; Key and Laboratory of Forest Chemical Engineering, SFA; Key Laboratory of Biomass Energy and Material，Nanjing 210042, Jiangsu, China
2. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China

Received:2018-09-11 Revised:2018-12-11 Online:2019-03-05 Published:2019-03-05
Contact: Fuxiang CHU

摘要/Abstract

摘要：

通过可逆加成断裂链转移聚合法（RAFT）将脱氢枞酸(2-甲基丙烯酰氧基异丙醇基)酯（DAGMA）单体接枝到乙基纤维素上合成了全生物质基两亲性的乙基纤维素-聚脱氢枞酸(2-甲基丙烯酰氧基异丙醇基)酯共聚物（EC-g-PDAGMA），并制备了聚合物自组装胶束。利用核磁共振氢谱（¹H NMR）、凝胶色谱仪（GPC）对聚合物的结构进行了表征，证实成功合成了EC-g-PDAGMA。由于脱氢枞酸的引入，EC-g-PDAGMA接枝共聚物具有明显的紫外吸收性能。利用动态光散射（DLS）和透射电子显微镜（TEM）对聚合物自组装胶束的粒径、胶束溶液的Zeta电位和形貌进行了表征。结果表明，EC-g-PDAGMA共聚物在选择性溶剂THF/H₂O中能够进行自组装形成规整的球形胶束，并且其大小随着聚合物浓度和分子链长而变化，粒径分布较窄，同时胶束具有良好的储存稳定性。

关键词: 自组装, 胶束, 乙基纤维素, 两亲性, 粒度分布

Abstract:

Novel biomass-based amphiphilic ethyl cellulose grafted 2-methcryloyloxyisopropanol ester of dehydroabietic acid (EC-g-DAGMA) copolymers was synthesized through the RAFT polymerization，and self-assembled micelles were prepared in the selective solvent THF/H₂O. The structure and molecular weight of the polymer was characterized by ¹H NMR and gel permeation chromatography (GPC)，which confirmed the successful synthesis of EC-g-PDAGMA. The amphiphilic copolymers showed an excellent UV absorption ability due to the presence of rosin based side chains. Dynamic light scattering (DLS), zeta-potential measurement and transmission electron microscopy (TEM) were used to study the self-assembly behavior of the EC-g-DAGMA copolymers. The results showed that the EC-g-PDAGMA copolymers could self-assemble to micelles in the selective solvent THF/H₂O with regular spherical morphology and good stabilities. Moreover, the diameters of micelles were influenced by the polymer concentration and molecular weights.

Key words: self-assembly, micelles, ethyl cellulose, amphiphilic, particle size distribution

中图分类号:

O632

程增会,王基夫,张代晖,王春鹏,储富祥,许凤. 两亲性乙基纤维素接枝松香聚合物的合成及自组装[J]. 化工进展, 2019, 38(03): 1476-1481.

Zenghui CHENG,Jifu WANG,Daihui ZHANG,Chunpeng WANG,Fuxiang CHU,Feng XU. Synthesis and self-assembly of amphiphilic ethyl cellulose grafted dehydroabietic moiety polymer[J]. Chemical Industry and Engineering Progress, 2019, 38(03): 1476-1481.

图/表 8

图1 乙基纤维素GPC曲线

图2 聚合反应流程示意图

图3 1H NMR谱图

图4 分子量大小及分布

图5 EC-DAGMA聚合物的紫外-可见吸收光谱

图6 聚合物胶束的粒径分布图

表1 不同聚合物S1浓度条件下形成胶束的粒径大小

聚合物浓度/mg·mL^-1	胶束粒径/nm
0.06	122
0.10	133
0.30	170

图7 在水中自组装胶束的TEM形貌

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两亲性乙基纤维素接枝松香聚合物的合成及自组装

Synthesis and self-assembly of amphiphilic ethyl cellulose grafted dehydroabietic moiety polymer

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