Microstructure study of styrene/n-butyl acrylate emulsion copolymers by 13C nuclear magnetic resonance spectroscopy |
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| Affiliation: | 1. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Polymeric Materials & Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges, Universities of Hunan Province, College of Chemistry,Xiangtan University, Xiangtan 411105, China;2. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, China;1. Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte Sant''Angelo, Via Cintia, 80126 Napoli, Italy;2. Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Via Port''Arsa 11, 82100 Benevento, Italy;1. Key Lab. of Biomass Energy and Material, Jiangsu Province, Institute of Chemical Industry of Forestry Products, CAF, Nanjing 210042, China;2. Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Province, Nanjing 210042, China;3. Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration, Beijing 100714, China;4. National Engineering Lab. for Biomass Chemical Utilization, Nanjing 210042, China |
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| Abstract: | A detailed study of the sequence distribution in styrene (S)/n-butyl acrylate (A) emulsion copolymers using 13C nuclear magnetic resonance spectroscopy is reported. From the interpretation of the spectra of the homopolymers and copolymers, assignment of the carbonyl (A) and quaternary (S) carbon atom resonances has been made. This provides a quantitative estimation of the compositional triad distributions in the copolymers. The results were found to be in relatively good agreement with calculated triad fractions deduced from a simulation program taking into account the actual reactivity ratios and type of emulsion process. |
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