Citation: ZHAO Yan-Qiong, FEI Fan, YI Cheng-Lin, JIANG Jin-Qiang, LUO Jing, LIU Xiao-Ya. Self-Assembled Colloid Particles and Properties of the Photosensitive Copolymer P(St/VM-co-MA)[J]. Acta Physico-Chimica Sinica, ;2010, 26(12): 3230-3236. doi: 10.3866/PKU.WHXB20101217 shu

Self-Assembled Colloid Particles and Properties of the Photosensitive Copolymer P(St/VM-co-MA)

1.
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China

Received Date: 13 August 2010
Available Online: 4 November 2010
Fund Project: 国家自然科学基金(20974041, 50673038)资助项目 (20974041, 50673038)

A photosensitive amphiphilic copolymer P(St/VM-co-MA) was synthesized from styrene (St), a styrene-containing photosensitive monomer 7-(4-vinylbenzyloxy)-4-methyl coumarin (VM), and maleic anhydride (MA) by free radical copolymerization. P(St/VM-co-MA) self-assembled into colloid particles in the selective solvent N,N-dimethylformamide (DMF)/H₂O. The morphologies, sizes, and size distributions of the colloid particles were characterized by transmission electron microscopy (TEM) and dynamic laser scattering (DLS). The P(St/VM-co-MA) colloid particles were photo-crosslinked by the photodimerization of the coumarin groups under UV irradiation to form crosslinked colloid particles. The crosslinking process was monitored using UV-Vis spectroscopy. The sizes and stabilities of the crosslinked and non-crosslinked colloid particles were examined by DLS. Additionally, the emulsification and encapsulation of the colloid particles were studied by laser scanning confocal microscopy (LSCM) and optical microscopy. The results showed that both the crosslinked and non-crosslinked colloid particles possessed emulsifying properties. During emulsification the oil-soluble dye was encapsulated into the emulsion. When the colloid particles were crosslinked, they became smaller and their structural stability as well as emulsification and encapsulation were improved.
- Photosensitivity,
- Amphiphilic copolymer,
- Self-assembly,
- Emulsification,
- Encapsulation
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