Preparation and properties of high vinyl polybutadiene/sepiolite nanocomposites using a sepiolite immobilized Mo‐based catalyst

Author:

Deng Qian1,Wang Xiaotong1,Fu Yuan1,Li Shengkai1,Liu Jinhui1,Hua Jing1ORCID

Affiliation:

1. Key Laboratory of Rubber‐Plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber and Plastics Qingdao University of Science and Technology Qingdao China

Abstract

AbstractThe preparation of polymer/nanoclay nanocomposite has received much attention in recent years from both academic researchers and industry. The addition of nanoclay in polymer matrix could prepare material with improved performance and reduced cost. However, nanocaly is easy to agglomerate resulting in poor dispersion in the matrix. In this work, we proposed the immobilized catalyst prepared by coordination between molybdenum pentachloride (MoCl5) and hydroxyl groups on the nano sepiolite. The obtained sepiolite immobilized catalyst was used for the in situ polymerization of butadiene. The butadiene monomers were diffused into the tiny holes and channels of the sepiolite and sepiolite dispersed uniformly by the effect of in situ polymerization. The immobilization of sepiolite improves the dispersity of MoCl5 during polymerization and further enhances the activity of the catalyst. The coordination between sepiolite and MoCl5 results in a slight drop in vinyl content, and the molecular weight distribution remain unchanged. The flame retardant property of the nanocomposite was further investigated, and the result shows that the addition of sepiolite could increase the Oxygen index. This novel composite with well‐dispersed sepiolite and high content of vinyl can be further applied to flame‐retardant elastic materials.

Funder

Natural Science Foundation of Shandong Province

China Petrochemical Corporation

Qingdao University of Science and Technology

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films,General Chemistry

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