Reinforcing polypropylene with calcium carbonate of different morphologies and polymorphs
Source abstract
Abstract
Abstract The influence of calcium carbonate (CaCO 3 ) with different polymorphs (calcite and aragonite) and morphologies (granular and rod-like) on mechanical and crystallization properties of polypropylene (PP) was investigated. Meanwhile, these CaCO 3 fillers coated with oleic acid were added in different contents to PP. The results indicate that the tensile strength, flexural strength, modulus, and crystallization property of the filler-treated samples are improved, but the impact strength decreased. The crystallinity of the composites is higher than that of neat PP. Moreover, in the rod shape filler-treated sample, in both whisker species, the mechanical properties of composites are superior to the particles filled. Differential scanning calorimetry, X-ray diffraction, and mechanical tests display that calcite whisker-reinforced composite has higher crystallization enthalpy, melting enthalpy, degree of crystallinity, and mechanical properties than aragonite whiskers and calcite particles filled composites.
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Research context
OpenAlex topics: Polymer Nanocomposites and Properties · Polymer crystallization and properties · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Qinghai Institute of Salt Lakes, Chinese Academy of Sciences , Qinghai 810008 , China
University of Chinese Academy of Sciences , Beijing 100049 , China
Qinghai Institute of Salt Lakes, Chinese Academy of Sciences , Qinghai 810008 , China , Phone: +86 0971 6363311, Fax: +86 0971 6310402
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