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Anomalous particles formed in two-stage soap-free emulsion polymerization of styrene on poly(2-acetoxyethyl methacrylate)
被引:20
|作者:
Shi, S
[1
]
Kuroda, S
[1
]
Kubota, H
[1
]
机构:
[1] Gunma Univ, Fac Engn, Dept Chem, Kiryu, Gumma 3768515, Japan
关键词:
two-stage soap-free emulsion polymerization;
latex interpenetrating polymer network;
anomalous particle;
nonspherical;
MORPHOLOGY;
SUSPENSION;
NETWORKS;
MECHANISM;
D O I:
10.1007/s00396-002-0773-1
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
In two-stage soap-free emulsion polymerization of styrene on cross-linked poly(2-acetoxyethyl methacrylate) (PAEMA), the resulting PAEMA/polystyrene latex interpenetrating polymer network particles were found to be nonspherical, assuming a wide variety of surface morphologies, such as "confetti-like", "raspberry-like", "popcornlike", "void-containing" particles, "doublets" and "triplets". The anomalous particles were characterized by transmission electron microscopy and atomic force microscopy, as a function of the degree of cross-linking of the PAEMA seed, the composition, the addition mode of the second-stage monomer, and the initiator type.
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页码:331 / 336
页数:6
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