桂林理工大学学报
桂林理工大學學報
계림리공대학학보
JOURNAL OF GUILIN UNIVERSITY OF TECHNOLOGY
2014年
2期
306-310
,共5页
聚合松香%甲基丙烯酸-β-羟乙酯%酯化物%苯乙烯%共聚
聚閤鬆香%甲基丙烯痠-β-羥乙酯%酯化物%苯乙烯%共聚
취합송향%갑기병희산-β-간을지%지화물%분을희%공취
polymerized rosin%2-Hydroxyethyl methacrylate%ester%styrene%copolymerization
以聚合松香（PR）与甲基丙烯酸-β-羟乙酯（HEMA）的酯化物（PRH）为单体，采用自由基溶液聚合方法制备了PRH与苯乙烯（St）的共聚物（PRHS）。探讨了单体比例、反应温度、引发剂用量和反应时间对共聚反应的影响。用红外光谱、热重分析和差示扫描量热分析对产物的结构、热稳定性和玻璃化转变温度进行了测试表征。结果表明：成功合成了酯化物PRH与St的共聚物PRHS；共聚物的热稳定性高于酯化物，苯乙烯用量越多，共聚物热稳定性和玻璃化转变温度越高；PRH与St共聚较佳的反应条件为：mPRH∶mSt ＝1∶2；反应温度为110℃；m（引发剂）∶m（单体）＝1％；反应时间为8 h，在此条件下，产率达70.14％。
以聚閤鬆香（PR）與甲基丙烯痠-β-羥乙酯（HEMA）的酯化物（PRH）為單體，採用自由基溶液聚閤方法製備瞭PRH與苯乙烯（St）的共聚物（PRHS）。探討瞭單體比例、反應溫度、引髮劑用量和反應時間對共聚反應的影響。用紅外光譜、熱重分析和差示掃描量熱分析對產物的結構、熱穩定性和玻璃化轉變溫度進行瞭測試錶徵。結果錶明：成功閤成瞭酯化物PRH與St的共聚物PRHS；共聚物的熱穩定性高于酯化物，苯乙烯用量越多，共聚物熱穩定性和玻璃化轉變溫度越高；PRH與St共聚較佳的反應條件為：mPRH∶mSt ＝1∶2；反應溫度為110℃；m（引髮劑）∶m（單體）＝1％；反應時間為8 h，在此條件下，產率達70.14％。
이취합송향（PR）여갑기병희산-β-간을지（HEMA）적지화물（PRH）위단체，채용자유기용액취합방법제비료PRH여분을희（St）적공취물（PRHS）。탐토료단체비례、반응온도、인발제용량화반응시간대공취반응적영향。용홍외광보、열중분석화차시소묘량열분석대산물적결구、열은정성화파리화전변온도진행료측시표정。결과표명：성공합성료지화물PRH여St적공취물PRHS；공취물적열은정성고우지화물，분을희용량월다，공취물열은정성화파리화전변온도월고；PRH여St공취교가적반응조건위：mPRH∶mSt ＝1∶2；반응온도위110℃；m（인발제）∶m（단체）＝1％；반응시간위8 h，재차조건하，산솔체70.14％。
A copolymer (PRHS)was prepared from styrene (St)and polymerized rosin ester (PRH),which was a product via esterification of polymerized rosin (PR)and 2-hydroxyethyl methacrylate (HEMA),via free radical solution copolymerization.The effects of monomer ratio,reaction temperature,initiator level and reac-tion time on copolymerization were studied.The molecular structures,thermal stabilities,and the glass transi-tion temperatures (Tg )of the products were characterized by Infrared spectroscopy,thermal gravimetric analy-sis and differential scanning calorimetry.The results show that PRHS was prepared successfully.The thermal stability of the copolymer was better than the ester.With the increase of St level,the thermal stability and Tg of the copolymer improved.The yield could reach to 70.14% with the optimal reaction time of 8 h and tempera-ture of 1 10 ℃ at the weight ratio of PRH to St of 1∶2 and the initiator amount of 1% (based on monomer).
