A green and efficient method to prepare oleic acid-modified CaCO<sub>3</sub>/reHDPE composites

Ye, Liangdong; Liu, Hongbo; Li, Dacheng; Wei, Qiaoyan; Xiao, Suijun; Lao, Yufei; Li, Ziwei; Lu, Shaorong

Green MaterialsOct 7, 2024

A green and efficient method to prepare oleic acid-modified CaCO<sub>3</sub>/reHDPE composites

Abstract

Industrial recycling of waste plastics frequently utilizes mechanical recovery and recycling. However, plastics recycled through mechanical recovery tend to have reduced properties, limiting their applications. In this study, modified calcium carbonate (OA-CaCO3) was prepared using different amounts of oleic acid (OA) (0.5, 1.0, and 2.0 wt%). Infrared spectroscopic characterization showed OA was successfully adsorbed on the CaCO3 surface. Particle size, micromorphology, oil absorption value, and activation tests indicated that CaCO3 modified with 1.0 wt% OA yielded optimal results. Melt blending 1.0 wt% OA-modified CaCO3 with recycled high-density polyethylene (reHDPE) produced composites. Scanning electron microscopy results showed OA modification enhanced interfacial compatibility between the two phases. Mechanical property tests revealed at high filling levels, the impact strength of OA-modified composites increased considerably, reaching 42.6 kJ/m2 with 40 wt% OA- CaCO3 filling. Melt flow rate test results showed that OA-modified composites had increased melt flow and modified processing properties. Filling OA-CaCO3 to compensate for reHDPE properties caused by mechanical recycling is essential to expand mechanical recycling applications in plastics recycling.

Meet DeepDyve

Get unlimited, instant access to over 150 million full-text scientific articles for less than the price of buying a single PDF.

150M+Research Papers

35M+Full-Text Streaming Papers

25M+Open Access Papers

$2/dayStarting Price

DeepDyve Collection

Access top-tier journals without the top-tier price. We partner directly with the world’s leading academic publishers to bring you legally compliant, instant access. Read the latest findings from Springer, Wiley, Oxford University Press, and more—all in one subscription.

Browse our collection of titles from leading publishers

AI Research Assistant

Accelerate your research with our advanced AI tools. Chat directly with your uploaded papers, and DeepDyve’s 50M+ LitStream and OA collections of full-text papers. AI responses come directly from the literature, footnoted and sourced, to provide the most authoritative and verifiable responses. AI outputs powered by OpenAI and Anthropic Claude. AI Smart Folders (coming soon)

Stop wasting time on paywalls, pirated sites and scattered journal portals

Streamline your research workflow with DeepDyve's comprehensive literature management solution for less than the price of buying a single PDF.

Try 1 month for $0