Submicron Sized Hollow Polymer Particles: Preparation and Properties
Submicron Sized Hollow Polymer Particles: Preparation and Properties
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DOI：
10.1002/masy.200550820
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发表时间：
2005-05
影响因子：
--
通讯作者：
V. Pavlyuchenko;O. V. Sorochinskaya;O. N. Primachenko;S. Ivanchev
中科院分区：
文献类型：
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作者：
V. Pavlyuchenko;O. V. Sorochinskaya;O. N. Primachenko;S. Ivanchev
所考虑的用于获得中空聚合物颗粒的方法基于以下途径：（1）通过丙烯酸类单体与甲基丙烯酸的乳液共聚制备羧基化核胶乳，（2）合成包含苯乙烯（共）聚合物壳的核-壳胶乳，（3）用碱中和核羧基，然后核离子化并水合至高度，壳膨胀和形成充满水的空洞。考虑了许多改善亲水核-疏水壳相容性和扩大中空体积的方法。合成的中空颗粒具有亚微米尺寸，相对中空体积为Vhol：V部分。= 0.43 - 0.64。讨论了用阳离子表面活性剂或酸性三聚氰胺树脂填充阴离子胶乳制备阳离子中空粒子胶乳的方法。用三聚氰胺树脂再填充显示出提供具有外部聚合物壳的中空颗粒，该外部聚合物壳提供颗粒的高热稳定性。
The considered method for obtaining hollow polymer particles is based on the following pathway: (1) preparation of a carboxylated core latex by emulsion copolymerization of acrylic monomers with methacrylic acid, (2) synthesis of a core-shell latex comprising a styrene (co)polymer shell, (3) neutralization of the core carboxylic groups with a base followed by the core ionization and hydration to a high degree, shell expansion and formation of water-filled hollows. A number of approaches to improve the hydrophilic core -hydrophobic shell compatibility and enlarge the hollow volume are considered. The synthesized hollow particles are of a submicron size with the relative hollow volume V hol : V part. = 0.43 - 0.64. Methods for cationic hollow particle latex preparation by anionic latex recharging with a cationic surfactant or acidic melamine resin are discussed. Recharging with a melamine resin is shown to afford hollow particles with an external polymer shell providing a high thermal stability of the particles.