Facile method to prepare monodisperse polystyrene particles by hydrothermal process
Facile method to prepare monodisperse polystyrene particles by hydrothermal process
复制标题
水热法制备单分散聚苯乙烯颗粒的简便方法
DOI：
10.1049/mnl.2012.0190
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发表时间：
2012-07
期刊：
影响因子：
--
通讯作者：
Guo, Bao-Hua
中科院分区：
文献类型：
--
作者：
Wan, Xian;Lin, Da-Wei;Li, Ying-Ru;He, Li-Na;Xie, Xu-Ming;Guo, Bao-Hua
采用水热法与分散聚合相结合的方法制备了单分散聚苯乙烯（PS）/交联PS复合粒子。与传统的分散聚合相比，以这种方式，苯乙烯在乙醇-水介质中的聚合可以在10/90至70/30的相对宽的乙醇/水比率范围内进行，因此在80°C下产生尺寸为160至1300 nm的单分散颗粒。 这意味着可以简单地获得单分散的PS颗粒，并且只需改变乙醇/水的比例即可调节PS颗粒尺寸的显着变化。该现象可以推断，水热过程在较高的反应压力下改善了单体在介质中的溶解度，这使得该方法能够扩大传统分散聚合的乙醇/水比例范围。此外，通过该方法，即使在交联剂高达2%的情况下，也可以在不添加稳定剂的情况下获得单分散的交联PS颗粒。不使用稳定剂可扩大交联单分散PS粒子的应用范围。用扫描电子显微镜观察了粒子的形成过程。证实了水热反应初期颗粒形态沿着发生转变，即初始不同尺寸的不规则颗粒逐渐聚集形成单分散颗粒。
A facile method to prepare monodisperse polystyrene (PS)/cross-linked PS particles was studied by combining hydrothermal process with dispersion polymerisation. Compared to traditional dispersion polymerisation, in this way the polymerisation of styrene in ethanol–water media could be carried out in a relatively wide ethanol/water ratio range from 10/90 to 70/30, consequently monodisperse particles from 160 to 1300 nm in size were generated at 80°C. It implies that the monodisperse PS particles could be acquired simply and the significant change in PS particle size could be adjusted by only varying the ethanol/water ratio. The phenomenon could be inferred that the hydrothermal process improved the solubility of the monomer in the media under a higher reaction pressure, which enabled this method to expand the ethanol/water ratio range for traditional dispersion polymerisation. Furthermore, the monodisperse cross-linked PS particles could also be obtained even at the cross-linking agent being up to 2% without addition of stabiliser through this method. Not using stabiliser could enlarge the application range of the cross-linked monodisperse PS particles. The formation process of the particles was detected using scanning electron microscopy. The particle morphology transformation along with hydrothermal reaction in the early stage was demonstrated, that is, the initial irregular particles in different size congregated gradually to form monodisperse particles.
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影响因子：
15
作者：
Song, JS;Tronc, F;Winnik, MA
通讯作者：
Winnik, MA
DOI：
10.1002/pola.1995.080330301
发表时间：
1995-02
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
B. Thomson;A. Rudin;G. Lajoie
通讯作者：
B. Thomson;A. Rudin;G. Lajoie
影响因子：
4
作者：
Choy, JH;Jang, ES;Kim, YW
通讯作者：
Kim, YW
DOI：
10.1002/polb.1992.090301102
发表时间：
1991-06
期刊：
Journal of Polymer Science Part B
影响因子：
--
作者：
Z. Ding;Shuaifei Ma;D. Kriz;J. J. Aklonis-J.;R. Salovey
通讯作者：
Z. Ding;Shuaifei Ma;D. Kriz;J. J. Aklonis-J.;R. Salovey
影响因子：
5.5
作者：
Jingjing Song;M. Winnik
通讯作者：
Jingjing Song;M. Winnik