A free radical assisted strategy for preparing functionalized carbon nanotubes as a highly efficient nucleating agent for poly(L-lactide)

Zhang Zi-Jing; Cui Wei; Xu Huan; Xie Lan; Liu Huan; Zhu Le-Min; Li Hang; Ran Rong

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A free radical assisted strategy for preparing functionalized carbon nanotubes as a highly efficient nucleating agent for poly(L-lactide)

机译：一种用于制备官能化碳纳米管作为聚（L-丙交酯）的高效成核剂的自由基辅助策略

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In this work, we synthesized novel functionalized carbon nanotubes (CNTs) by grafting poly(ethylene glycol) methyl ether methacrylate (OEGMA) onto CNTs via free radical polymerization in which the 3-methacryloxypropyltrimethoxysilane (KH570) was used as the silane coupling agent. The resulting OEGMA grafted CNTs (CNT-OEG) were systematically characterized by Fourier transform infrared spectroscopy (FTIR), thermal analysis, transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Then the obtained CNT-OEG was added to poly(L-lactide) (PLA) as a crystallization nucleation agent. The crystallization behavior of the CNT-OEG/PLA composites was investigated under isothermal and nonisothermal conditions using a differential scanning calorimeter (DSC) and polarized optical microscopy (POM). Interestingly, our results suggested that the addition of CNT-OEG improve the crystallization rate of PLA dramatically. Besides, the decoration of CNTs via free radical polymerization facilitates their distribution in the matrix. This robust method to connect reactive polymers to nanofillers including, but not limited to, graphene, clay and cellulose nanofibrils, may significantly facilitate their utilization in traditional composites or biological engineering materials.

机译：在这项工作中，我们通过自由基聚合将聚（乙二醇）甲基醚甲基丙烯酸酯（OEGMA）接地将新的官能化碳纳米管（CNT）合成，通过自由基聚合，其中3-甲基丙烯酰氧基丙基三甲氧基硅烷（KH570）用作硅烷偶联剂。通过傅里叶变换红外光谱（FTIR），热分析，透射电子显微镜（TEM）和X射线光电子谱（XPS）系统地表征了所得OEGMA接枝的CNT（CNT-OEG）。然后将所得的CNT-OEG加入到聚（L-丙交酯）（PLA）中作为结晶成核剂。使用差示扫描量热计（DSC）和偏振光显微镜（POM）在等温和非等温条件下研究CNT-OEG / PLA复合材料的结晶行为。有趣的是，我们的结果表明CNT-OEG的添加提高了PLA的结晶速率。此外，通过自由基聚合的CNT的装饰有助于它们在基质中的分布。这种将反应聚合物连接到纳米填充物的鲁棒方法包括但不限于石墨烯，粘土和纤维素纳米纤维，可以显着促进其在传统复合材料或生物工程材料中的利用。

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《RSC Advances》 |2015年第21期|共7页
作者
Zhang Zi-Jing; Cui Wei; Xu Huan; Xie Lan; Liu Huan; Zhu Le-Min; Li Hang; Ran Rong;
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Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

Sichuan Univ Coll Polymer Sci &

Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China;

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中图分类化学;
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1. A free radical assisted strategy for preparing functionalized carbon nanotubes as a highly efficient nucleating agent for poly(L-lactide) [J] . Zhang Zi-Jing, Cui Wei, Xu Huan, RSC Advances . 2015,第21期

机译：一种用于制备官能化碳纳米管作为聚（L-丙交酯）的高效成核剂的自由基辅助策略
2. Pyrene-end-functionalized poly(L-lactide) as an efficient carbon nanotube dispersing agent in poly(L-lactide): mechanical performance and biocompatibility study [J] . Martinez de Arenaza I., Obarzanek-Fojt M., Sarasua J. R., Biomedical materials . 2015,第4期

机译：end末端官能化的聚（L-丙交酯）作为聚（L-丙交酯）中有效的碳纳米管分散剂：力学性能和生物相容性研究
3. A free radical assisted strategy for preparing ultra-small Pt decorated CNTs as a highly efficient counter electrode for dye-sensitized solar cells [J] . Xiao Hua Yang, Jian Wei Guo, Shuang Yang Journal of Materials Chemistry, A. Materials for energy and sustainability . 2014,第3期

机译：一种自由基辅助策略，用于制备超小Pt装饰的CNTs作为染料敏化太阳能电池的高效对电极
4. Poly(D-lactide)-Poly(menthide)-Poly(D-lactide) Triblock Copolymers as Crystal Nucleating Agents for Poly(L-lactide) [C] . Carolyn L. Wanamaker, William B. Tolman, Marc A. Hillmyer US-Mexico Symposium on Advances in Polymer Science . 2009

机译：聚（D-丙交酯）-poly（终叶片） - 聚（D-丙交酯）三嵌段共聚物作为聚（L-丙交酯）的晶体成核剂
5. Functional self-assembled poly (L-lactide) nanoparticles for targeted delivery of bioactive agents. [D] . Mercado-Pagan, Angel E. 2010

机译：功能性自组装聚（L-丙交酯）纳米粒子，用于靶向递送生物活性剂。
6. Evaluating the biological risk of functionalized multiwalled carbon nanotubes and functionalized oxygen-doped multiwalled carbon nanotubes as possible toxic carcinogenic and embryotoxic agents [O] . Luis A Lara-Martínez, Felipe Massó, Eduardo Palacios González, 2017

机译：评估功能化的多壁碳纳米管和功能化的氧掺杂的多壁碳纳米管作为可能的有毒致癌和胚胎毒性试剂的生物风险
7. Poly(ethylene oxide)-b-poly(L-lactide) diblock copolymer/carbon nanotube-based nanocomposites: LiCl as supramolecular structure-directing agent [O] . Meyer, Franck, Raquez, Jean-Marie, Verge, Pierre, 2011

机译：聚（环氧乙烷）-b-聚（L-丙交酯）二嵌段共聚物/碳纳米管基纳米复合材料：LiCl作为超分子结构导向剂

A free radical assisted strategy for preparing functionalized carbon nanotubes as a highly efficient nucleating agent for poly(L-lactide)

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