نوع مقاله : پژوهشی
نویسندگان
1 تهران، پژوهشگاه پلیمر و پتروشیمی ایران، پژوهشکده فرایند، گروه چسب و رزین، کد پستی 1497713115
2 تهران، پژوهشگاه پلیمر و پتروشیمی ایران، پژوهشکده مهندسی، گروه مدلسازی و کنترل فرایند، کد پستی 1497713115
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Hypothesis: 1,6-Diaminohexane was utilized as a crosslinker in the synthesis of acrylic acid-co-acetoacetoxy ethylmethacrylate (AA-co-AAEM) microgel prepared by precipitation polymerization. First, the optimum monomer ratio was assessed. Second, the effects of crosslinker concentration and post-cure stage time on microgel properties were evaluated through different experiments.
Methods: The optimum monomers ratio was evaluated using the gel viscosity of the final products . FTIR spectroscopy was used as a criterion of the success of copolymerization reaction. The effects of crosslinker concentration and post-cure time on the microgels’ properties (i.e., swelling capacity, gel content, apparent viscosity rotational viscosity, rheological properties, and glass transition temperature) were investigated
Findings: The copolymer with a monomer ratio of AA:AAEM 95:5 showed the highest viscosity value and chosen as the optimum sample. The experimental results showed that by increasing the crosslinker concentration to 0.05g and the post-cure time up to 2 h, the swelling capacity, apparent and rotational viscosity, storage modulus loss modulus and glass transition temperature increased due to the increase in the sol content. However, increasing the crosslinker content beyond 0.05 g demonstrated diminishing the above properties due to severe crosslinking. Overall, the results revealed a new class of microgels with promising high performance in cosmetic and health products.
کلیدواژهها [English]
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