Please use this identifier to cite or link to this item:
https://hdl.handle.net/11147/14714
Title: | Film-formation property of vinylidene chloride-methyl methacrylate copolymer latex. II. Effect of latex storage temperature | Authors: | Cai,W.D. Ramesh,N. Tihminlioglu,F. Danner,R.P. Duda,J.L. Dhaan,A. |
Keywords: | Coatings Crystallization Emulsion polymerization Latices Methyl methacrylate Minimum film-formation temperature Polymer crystallinity Storage temperature Vinylidene chloride |
Abstract: | Changes in the minimum film-formation temperature (MFFT) of 91:9 wt% vinylidene chloride (VDC)-methyl methacrylate (MMA) latex prepared by the seeded batch process during storage at 5, 20, and 40°C were investigated. MFFT of the latex rose the fastest at 20°C. Infrared absorption of fresh and stored latexes and wide-angle X-ray diffraction of powder polymers obtained by lyophilization of fresh and stored latexes indicated a much greater increase in polymer crystallinity during latex storage at 20°C than at 5 and 40°C. Observed increases in MFFT during latex storage correlated with increases in polymer crystallinity. Infrared absorption of polymer stored at 5-60°C in the dry state, such as lyophilized polymer and coating film, indicated that a polymer crystallinity increase was greater during storage at higher temperatures. These results showed that crystallization behavior of 91:9 wt% VDC-MMA copolymer latex differed from that of VDC-MMA copolymer in the dry state. | URI: | https://doi.org/10.1002/polb.10144 https://hdl.handle.net/11147/14714 |
ISSN: | 0887-6266 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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