Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-<italic style="font-style: italic">b</italic>-Poly(methyl methacrylate) Block Copolymer

Xin Liu; Yi-lin Sun; Jian Li; Qiang Ren; Cheng-yi Wang

doi:10.11777/j.issn1000-3304.2016.16060

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Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-b-Poly(methyl methacrylate) Block Copolymer

Research Article | 更新时间：2021-03-19

- Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-b-Poly(methyl methacrylate) Block Copolymer
- Acta Polymerica Sinica Issue 11, Pages: 1529-1537(2016)
- 作者机构：
  
  江苏省光伏科学与工程协同创新中心常州大学材料科学与工程学院常州 213164
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2016.16060
  CLC：
- Published：2016-11，
  
  Received：1 March 2016，
  
  Revised：1 April 2016，
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Xin Liu, Yi-lin Sun, Jian Li, Qiang Ren, Cheng-yi Wang. Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-b-Poly(methyl methacrylate) Block Copolymer. [J]. Acta Polymerica Sinica (11):1529-1537(2016)
DOI：

Xin Liu, Yi-lin Sun, Jian Li, Qiang Ren, Cheng-yi Wang. Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-b-Poly(methyl methacrylate) Block Copolymer. [J]. Acta Polymerica Sinica (11):1529-1537(2016) DOI： 10.11777/j.issn1000-3304.2016.16060.

摘要

采用电子转移再生催化剂原子转移自由基聚合(ARGET ATRP)制备了端羟基聚丙烯酸丁酯-

-聚甲基丙烯酸甲酯嵌段共聚物(HO-PBA-

-PMMA)，在此基础上，与六亚甲基二异氰酸酯三聚体(N3390)反应，合成了多臂聚丙烯酸丁酯

-b

-聚甲基丙烯酸甲酯嵌段共聚物.通过凝胶渗透色谱(GPC)、核磁共振仪(

H-NMR)、傅里叶变换红外光谱计(FTIR)对聚合物的结构进行了表征，利用原子力显微镜(AFM)观察了其形貌，采用动态热机械分析仪(DMA)和万能拉伸机研究了聚合物的热性能、力学性能及多臂嵌段共聚物对PMMA的增韧性能.结果表明：成功制备了端羟基聚丙烯酸丁酯

-b

-聚甲基丙烯酸甲酯，以及多臂聚丙烯酸丁酯-

聚甲基丙烯酸甲酯嵌段共聚物.在异氰酸酯基/羟基(NCO/OH)摩尔比为1.2/1时，制得的多臂嵌段共聚物相对分子质量最大，Mark-Houwink参数α值最小，表明此时三臂嵌段共聚物最多.多臂嵌段聚合物的拉伸强度和断裂伸长率比线型聚合物均有明显提高，且在NCO/OH摩尔比为1.2/1时达到最大，分别为7.6 MPa和73%.多臂嵌段聚合物具有更高的玻璃化转变温度(

).通过原子力显微镜(AFM)表明，多臂聚丙烯酸丁酯

-b-

聚甲基丙烯酸甲酯嵌段共聚物形成了以聚丙烯酸丁酯链段为核，聚甲基丙烯酸甲酯为壳的核壳结构.具有核壳结构的多臂聚丙烯酸丁酯

-b

-聚甲基丙烯酸甲酯嵌段共聚物对聚甲基丙烯酸甲酯有明显的增韧作用.

Abstract

Hydroxyl-terminated poly(butyl acrylate)-

-poly(methyl methacrylate) block copolymer was synthesized

via

atom transfer radical polymerization with activators regenerated by electron transfer (ARGET ATRP) using 4-hydroxybutyl 2-bromo-2-methylpropanoate as an initiator

copper (Ⅱ) bromide (CuBr

) as a catalyst

pentamethyldiethylene triamine (PMDETA) as a ligand

and stannous octoate (Sn(EH)

) as a reducing agent.Then multi-arm poly(butyl acrylate)-

-poly(methyl methacrylate) block copolymers were prepared

via

the reaction between hydroxyl-terminated poly(butyl acrylate)-

-poly(methyl methacrylate) block copolymer and hexamethylene diisocyanate trimer (N3390) using dibutyltin dilaurate as a catalytic agent.The structures of the copolymers obtained were characterized by gel permeation chromatography (GPC)

H nuclear magnetic resonance (

H-NMR)

and Fourier transform infrared spectrometer (FTIR).The morphologies of the linear and multi-arm polymers were observed by atomic force microscopy (AFM).Mechanical and thermodynamic properties of the hydroxyl-terminated poly(butyl acrylate)-

-poly(methyl methacrylate) block copolymer and the multi-arm block copolymers were investigated by universal tensile machine and dynamic mechanical analyser (DMA)

respectively.The results showed that the hydroxyl-terminated block copolymer and the multi-arm block copolymers were successfully synthesized.When the molar ratio of NCO/OH reached 1.2/1

maximal amount of three-arm block copolymers was obtained.The tensile strength and the elongation at break of the multi-arm copolymers were higher than those of the linear copolymers

and these values achieved maximum with NCO/OH of 1.2/1.In this case

multi-arm block copolymer showed tensile strength of 7.6 MPa and elongation at break of 73%

respectively.Compared with the linear block copolymer

the glass transition temperature (

) of the multi-arm block copolymer was higher.Atomic force microscopy (AFM) indicated that the multi-arm block copolymer possessed distinct core-shell structure with PBA as the core and PMMA as the shell.And the multi-arm block copolymer with core-shell structure could be used as a toughening agent for poly(methyl methacrylate).

关键词

多臂嵌段丙烯酸酯增韧

Keywords

Multi-armBlock copolymerAcrylateToughening

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Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350)

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College of Chemistry, Sichuan University

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Synthesis and Characterization of Multi-arm Poly(butyl acrylate)-b-Poly(methyl methacrylate) Block Copolymer

DOI：10.11777/j.issn1000-3304.2016.16060

摘要

Abstract

关键词

Keywords

references