Preparation of Open-Cell Long-Chain Branched Polypropylene Foams for Oil Absorption.

ABSTRACT: This study aimed to prepare open-cell foams using a blend of long-chain branched polypropylene and polyolefin elastomer (LCBPP/POE) for the production of reusable oil absorbents. The supercritical CO₂ foaming process was conducted using a two-step batch rapid depressurization method. This unique two-step foaming approach significantly expanded the temperature and pressure windows, resulting in more uniform cells with smaller sizes, ultimately leading to higher expansion ratios and an increased open cell content. The foaming process was optimized by adjusting parameters, such as the LCBPP/POE ratio, foaming temperature, and foaming pressure, reaching a maximum open cell content of 97.6% and a maximum expansion ratio of 48. The influence of polypropylene (PP) crystallization was i

SUBMITTER: Li C 

PROVIDER: S-EPMC10753697 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature