聚苯乙烯微球Plain Polystyrene Beads
聚苯乙烯微球(PS)是一种常见的高分子微球材料,窄粒径分布聚苯乙烯(PS)微球的制备方法,随即聚合物微球的制备与研究成为了高分子科学研究的新领域。聚苯乙烯微球具有高分子微球材料的通性,如粒径小、比表面积大、吸附性强、分散性好、易于改性和修饰等。广泛应用于生物化学、电化学检测、催化剂、吸附剂、色谱填料、涂料等领域。以下是聚苯乙烯微球几种常见的制备方法:
1.悬浮聚合法利用甲基丙烯酸羟乙酯(HEMA)生产带有双键的丙烯酸松香酯(RAH)为交联单体与聚苯乙烯微球进行反应,取代传统的单体-二乙烯基苯。结果表明,当聚苯乙烯与丙烯酸松香酯单体的单位质量比为2:1,制备的聚合物微球球形最好。
2.乳液聚合法
通过乳液聚合的方法,采用苯乙烯(St)、过硫酸钾(KPS)、表面活性剂十二烷基硫酸钠(SDS)为原料,成功地制备出了粒度在50 nm左右,粒径分布均匀且具有良好球形度的单分散PS纳米微球。
3.分散聚合法
分散聚合法是一种新的聚合方法,其实是一种特殊的沉淀聚合法,体系主要由单体、分散介质、稳定剂和引发剂组成。它是将单体、引发剂、稳定剂等溶解形成均相反应体系。聚合最初形成的聚合物溶于体系,当链长达到一定程度后,聚合物便从反应体系中沉析,形成聚合物乳液的分散体系。稳定剂的选择是分散聚合成败的关键,常用的分散剂有聚乙烯咣咯烷酮、丙烯酸、聚乙二醇等。
Plain Polystyrene Beads 15nm in water w/v%:1 2ml
Plain Polystyrene Beads 25nm in water w/v%:1 2ml
Plain Polystyrene Beads 50nm in water w/v%:1 2ml
Plain Polystyrene Beads 75nm in water w/v%:1 2ml
Plain Polystyrene Beads 100nm in water w/v%:1 2ml
Plain Polystyrene Beads 150nm in water w/v%:1 2ml
Plain Polystyrene Beads 200nm in water w/v%:1 2ml
Plain Polystyrene Beads 300nm in water w/v%:1 2ml
Plain Polystyrene Beads 500nm in water w/v%:1 2ml
Plain Polystyrene Beads 750nm in water w/v%:1 2ml
Plain Polystyrene Beads 1000nm in water w/v%:1 2ml
Plain Polystyrene Beads 2000nm in water w/v%:1 2ml
Plain Polystyrene Beads 2500nm in water w/v%:1 2ml
Plain Polystyrene Beads 3000nm in water w/v%:1 2ml
Plain Polystyrene Beads 4000nm in water w/v%:1 2ml
Plain Polystyrene Beads 5000nm in water w/v%:1 2ml
Plain Polystyrene Beads 6000nm in water w/v%:1 2ml
Plain Polystyrene Beads 8000nm in water w/v%:1 2ml
Plain Polystyrene Beads 10000nm in water w/v%:1 2ml
Plain Polystyrene Beads 30um bead; 100mg
Plain Polystyrene Beads 40um bead; 100mg
Plain Polystyrene Beads 50um bead; 100mg
Plain Polystyrene Beads 75um bead; 100mg
Plain Polystyrene Beads 100um bead; 100mg
Plain Polystyrene Beads 200um bead; 100mg
Plain Polystyrene Beads 500um bead; 100mg
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