Title: Synthesis and characterization of designed cellulose-graft-polyisoprene copolymers

Zhongkai Wang, Yaqiong Zhang, Feng Jiang, Huagao Fang and Zhigang Wang*

Polym. Chem., 2014, 5(10), 3379-3388

志刚等在此感谢Polymer Chemistry期刊编辑和三位审稿人对于我们研究工作的理解和支持并提出了宝贵的修改建议！感谢啊！

在本文中我们报道了一种精心设计的新型接枝共聚物，该共聚物源自具备相反物理性质的两种丰富的天然高分子：刚性且亲水的纤维素和柔性且疏水的合成聚异戊二烯（天然橡胶的类似物），该接枝共聚物将刚性和柔性，疏水性和亲水性有机结合在一个大分子中。所设计的纤维素-接枝-聚异戊二烯共聚物（Cell-g-PI）是通过均相补充催化剂和还原剂原子转移自由基聚合（SARA ATRP）合成的。FT-IR, ¹H NMR,¹³C NMR和TGA测试表明Cell-g-PI共聚物被成功制备。TEM和DMA实验结果说明在Cell-g-PI共聚物中发生微相分离。水接触角测试证明Cell-g-PI的疏水性随着聚异戊二烯侧链长度增加而增大。此外，通过自组织沉淀法可以制备水相中的核-壳结构的Cell-g-PI纳米粒子。

In this work, we report an elegant design of novel graft copolymers based on two natural abundant biopolymers with opposite physical properties: rigid and hydrophilic cellulose, and flexible and hydrophobic synthesized polyisoprene (analogue of natural rubber), which combines rigidity and flexibility, hydrophobicity and hydrophilicity all in one macromolecule. These cellulose-graft-polyisoprene (Cell-g-PI) copolymers were synthesized via homogenous supplemental activator and reducing agent atom transfer radical polymerization (SARA ATRP). FT-IR, 1H NMR, 13C NMR and TGA measurements demonstrate that Cell-g-PI copolymers are successfully prepared. TEM and DMA results illustrate that phase separation occurs in Cell-g-PI copolymers. Water contact angle measurements verify that their hydrophobicity increases with increasing polyisoprene side chain length. In addition, the core–shell Cell-g-PI nanoparticles in water can be prepared via a self-organized precipitation (SORP) method.