化学通报（网络版）
化學通報（網絡版）
화학통보（망락판）
Chemistry Online
2005年
1期
1-6
,共6页
张凯%傅强%黄渝鸿%周德惠%江璐霞
張凱%傅彊%黃渝鴻%週德惠%江璐霞
장개%부강%황투홍%주덕혜%강로하
交联型聚苯乙烯微球%窄分布%微米级%制备%表征
交聯型聚苯乙烯微毬%窄分佈%微米級%製備%錶徵
교련형취분을희미구%착분포%미미급%제비%표정
Crosslinked polystyrene microspheres%Narrow size distribution%Micron size%Preparation%Characterization
在苯乙烯分散聚合反应过程中分别采用一次加料法和后滴加法加入交联单体二乙烯基苯(DVB),制备出了平均粒径为3.0μm的窄分布线型及交联型聚苯乙烯微球.对两种类型聚苯乙烯微球进行形貌及粒径、差示扫描量热(DSC)分析和耐溶剂性实验,结果表明采用交联单体后加料法可制备出交联型聚苯乙烯微球,与交联单体一次加料法制备出的线型聚苯乙烯微球相比,其球形度较差,粒径分布较宽,但耐热性和耐溶剂性较好.随着 DVB 用量的增加,交联型聚苯乙烯微球粒径增大,粒径分布变宽,但DVB用量达到一定值时,会出现相互凝聚现象.
在苯乙烯分散聚閤反應過程中分彆採用一次加料法和後滴加法加入交聯單體二乙烯基苯(DVB),製備齣瞭平均粒徑為3.0μm的窄分佈線型及交聯型聚苯乙烯微毬.對兩種類型聚苯乙烯微毬進行形貌及粒徑、差示掃描量熱(DSC)分析和耐溶劑性實驗,結果錶明採用交聯單體後加料法可製備齣交聯型聚苯乙烯微毬,與交聯單體一次加料法製備齣的線型聚苯乙烯微毬相比,其毬形度較差,粒徑分佈較寬,但耐熱性和耐溶劑性較好.隨著 DVB 用量的增加,交聯型聚苯乙烯微毬粒徑增大,粒徑分佈變寬,但DVB用量達到一定值時,會齣現相互凝聚現象.
재분을희분산취합반응과정중분별채용일차가료법화후적가법가입교련단체이을희기분(DVB),제비출료평균립경위3.0μm적착분포선형급교련형취분을희미구.대량충류형취분을희미구진행형모급립경、차시소묘량열(DSC)분석화내용제성실험,결과표명채용교련단체후가료법가제비출교련형취분을희미구,여교련단체일차가료법제비출적선형취분을희미구상비,기구형도교차,립경분포교관,단내열성화내용제성교호.수착 DVB 용량적증가,교련형취분을희미구립경증대,립경분포변관,단DVB용량체도일정치시,회출현상호응취현상.
In the paper, narrow size distribution linear and crosslinked polystyrene microspheres with average size of about 3.0μm were prepared through adding crosslinker divinylbenzene by batch and post-addition methods in dispersion polymerization of styrene. These two kinds of polystyrene microspheres were compared in some properties including morphology and size analysis, DSC and solvent-resistant experiment. The results showed that crosslinked polystyrene microspheres prepared by batch addition method of DVB have poorer sphericity, wider size distribution, better heat-resistant and solvent-resistant properties than linear polystyrene microspheres prepared by post-addition method. The size and size distribution of crosslinked polystyrene microspheres increased with increasing amount of stabilizer and co-stabilizer.
