Characteristics of polymerization-filled polycaprolactams
Valerii CheshkovCentral Laboratory of Physico-Chemical Mechanics, Bulgarian Academy of Sciences, Sofia 1113, BulgariaMargarita NatovaCentral Laboratory of Physico-Chemical Mechanics, Bulgarian Academy of Sciences, Sofia 1113, BulgariaN. R. AshurovInstitute of Polymer Chemistry and Physics, Uzbek Academy of Sciences, Tashkent 700128, UzbekistanM.M. UsmanovaInstitute of Polymer Chemistry and Physics, Uzbek Academy of Sciences, Tashkent 700128, UzbekistanAlexander M. VekselmanMcGill University, Montreal, Quebec H3S 2K6, Canada
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A polymerization filling of a base in character monomer (ϵ-caprolactam) was carried out using fillers with solid acid character and catalytic action such as γ-alumina and calcium phosphate. The properties and structure of the polymerization-filled polycaprolactam obtained were studied. The following characteristics were determined: melting temperature, glass transition temperature, crystallization temperature, tensile strength, and dynamic elastic modulus. The advantages of the polymerization filling method are shown as compared to conventional methods for homogeneous production of polycaprolactam. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 1255–1258, 1997
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