CAJ | 학술논문

以1,1-二苯基乙烯（DPE）为分子量调节剂，偶氮二异丁腈（AIBN）为引发剂进行甲基丙烯酸丁酯（BMA）的可控自由基聚合（DPE法）。研究了溶剂、DPE用量及反应温度对于聚合的影响，得到分子量分布较窄（PDI=1.43）的含有DPE半醌式休眠种结构的聚甲基丙烯酸丁酯（PBMA）。以PBMA为引发剂引发甲基丙烯酸二甲氨基乙酯（DMAEMA）聚合，得到分子量分布较窄的（PDI=2.0）双亲性嵌段共聚物（PBMA-b-PDMAEMA）。核磁共振氢谱（1H NMR）测得共聚物组成与GPC测试结果相近。差示扫描量热分析（DSC）测试表明嵌段共聚物在11℃和35℃处有两个玻璃化转变温度。色浆的流变和粒径测试及漆膜性能测试表明，将所得双亲性嵌段共聚物作为酞菁蓝颜料分散剂，可以明显提高酞菁蓝颜料在丙烯酸酯树脂中的分散效率。
이1,1-이분기을희（DPE）위분자량조절제，우담이이정정（AIBN）위인발제진행갑기병희산정지（BMA）적가공자유기취합（DPE법）。연구료용제、DPE용량급반응온도대우취합적영향，득도분자량분포교착（PDI=1.43）적함유DPE반곤식휴면충결구적취갑기병희산정지（PBMA）。이PBMA위인발제인발갑기병희산이갑안기을지（DMAEMA）취합，득도분자량분포교착적（PDI=2.0）쌍친성감단공취물（PBMA-b-PDMAEMA）。핵자공진경보（1H NMR）측득공취물조성여GPC측시결과상근。차시소묘량열분석（DSC）측시표명감단공취물재11℃화35℃처유량개파리화전변온도。색장적류변화립경측시급칠막성능측시표명，장소득쌍친성감단공취물작위태정람안료분산제，가이명현제고태정람안료재병희산지수지중적분산효솔。
Controlled free radical polymerization of butyl methacrylate (BMA) was performed by using DPE as molecular weight regulator and AIBN as initiator. The influence of solvent, dosage of DPE and reaction time on polymerization kinetics were studied. Poly (butyl methacrylate) (PBMA) with terminal DPE semiquinoid structure and polydispersity less than 1.43 was obtained. Amphiphilic block copolymer PBMA-b-PDMAEMA with polydispersity of 2.0 was prepared by using PBMA as macroinitiator. The composition of copolymer determined by hydrogen proton nuclear resonance (1H NMR) was similar to that calculated from gel permeation chromatography (GPC). Two glass transition temperatures of the prepared block copolymer at 11℃ and 35℃could be detected by differential scanning calorimetry (DSC). Rheological investigation, laser particle size analysis of pigment paste and performance of coating film revealed that dispersing efficiency of phthalocyanine blue pigment in acrylic resin was enhanced greatly by using the prepared PBMA-b-PDMAEMA as dispersant.