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首页> 外文期刊>Journal of Applied Polymer Science >Copolymerization of N-aryl substituted itaconimide with methyl methacrylate: Effect of substituents on monomer reactivity ratio and thermal behavior
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Copolymerization of N-aryl substituted itaconimide with methyl methacrylate: Effect of substituents on monomer reactivity ratio and thermal behavior

机译：N-芳基取代的衣康酰亚胺与甲基丙烯酸甲酯的共聚合：取代基对单体反应率和热行为的影响

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The article describes the synthesis and characterization of N-(4-methoxy-3-chlorophenyl) itaconimide (MCPI) and N-(2-methoxy-5-chlorophenyl) itaconimide (OMCPI) obtained by reacting itaconic anhydride with 4-methoxy-3-chloroanisidine and 2-methoxy-5-chloroanisidine, respectively. Structural and thermal characterization of MCPI and OMCPI monomers was done by using H-1 NMR, FTIR, and differential scanning calorimetry (DSC). Copolymerization of MCPI or OMCPI with methyl methacrylate (MMA) in solution was carried out at 60 degrees C using AIBN as an initiator and THF as solvent. Feed compositions having varying mole fractions of MCPI and OMCPI ranging from 0.1 to 0.5 were taken to prepare copolymers. Copolymerizations were terminated at low percentage conversion. Structural characterization of copolymers was done by FTIR, H-1 NMR, and elemental analysis and percent nitrogen content was used to calculate the copolymer composition. The monomer reactivity ratios for MMA-MCPI copolymers were found to be r(1) (MMA) = 0.32 +/- 0.03 and r(2) (MCPI) = 1.54 +/- 0.05 and that for MMA-OMCPI copolymers were r(1) (MMA) = 0.15 +/- 0.02 and r(2) (OMCPl) = 1.23 +/- 0.18. The intrinsic viscosity [71] of the copolymers decreased with increasing mole fraction of MCPI/or OMCPI. The glass transition temperature as determined from DSC scans was found to increase with increasing amounts of OMPCI in copolymers. A significant improvement in the char yield as determined by thermogravimetry was observed upon copolymerization. (c) 2006 Wiley Periodicals, Inc.
机译：该文章描述了衣康酸酐与4-甲氧基-3反应制得的N-（4-甲氧基-3-氯苯基）衣康酰亚胺（MCPI）和N-（2-甲氧基-5-氯苯基）衣康酰亚胺（OMCPI）的合成和表征-氯茴香胺和2-甲氧基-5-氯茴香胺。通过使用H-1 NMR，FTIR和差示扫描量热法（DSC）对MCPI和OMCPI单体进行结构和热表征。 MCPI或OMCPI与甲基丙烯酸甲酯（MMA）在溶液中的共聚反应是在60摄氏度下使用AIBN作为引发剂和THF作为溶剂进行的。取MCPI和OMCPI的摩尔分数在0.1至0.5范围内的进料组合物以制备共聚物。以低百分比转化率终止共聚。共聚物的结构表征是通过FTIR，H-1 NMR进行的，并且元素分析和氮含量百分比用于计算共聚物组成。发现MMA-MCPI共聚物的单体反应性比为r（1）（MMA）= 0.32 +/- 0.03和r（2）（MCPI）= 1.54 +/- 0.05，而MMA-OMCPI共聚物的单体反应性比为r（ 1）（MMA）= 0.15 +/- 0.02和r（2）（OMCP1）= 1.23 +/- 0.18。共聚物的特性粘度[71]随着MCPI /或OMCPI摩尔分数的增加而降低。发现由DSC扫描确定的玻璃化转变温度随着共聚物中OMPCI含量的增加而增加。在共聚时观察到通过热重法测定的焦炭收率显着提高。 （c）2006年Wiley Periodicals，Inc.

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