課題組汪鐘凱博士等在Polymer Chemistry發表課題組第134篇論文 (Polym. Chem., 2014, 5(10), 3379-3388)
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
志剛等在此感謝Polymer Chemistry期刊編輯和三位審稿人對于我們研究工作的理解和支持并提出了寶貴的修改建議！感謝啊！
在本文中我們報道了一種精心設計的新型接枝共聚物，該共聚物源自具備相反物理性質的兩種豐富的天然高分子：剛性且親水的纖維素和柔性且疏水的合成聚異戊二烯（天然橡膠的類似物），該接枝共聚物將剛性和柔性，疏水性和親水性有機結合在一個大分子中。所設計的纖維素-接枝-聚異戊二烯共聚物（Cell-g-PI）是通過均相補充催化劑和還原劑原子轉移自由基聚合（SARA ATRP）合成的。FT-IR, 1H NMR,13C NMR和TGA測試表明Cell-g-PI共聚物被成功制備。TEM和DMA實驗結果說明在Cell-g-PI共聚物中發生微相分離。水接觸角測試證明Cell-g-PI的疏水性隨著聚異戊二烯側鏈長度增加而增大。此外，通過自組織沉淀法可以制備水相中的核-殼結構的Cell-g-PI納米粒子。
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.