Lee Yong-Min, Kim Kwan-Woo, Yang Jae-Yeon, Kim Byung-Joo
Research & Development Division, Korea Carbon Industry Promotion Agency, Jeonju 54852, Republic of Korea.
Department of Materials Science and Chemical Engineering, Jeonju University, Jeonju 55069, Republic of Korea.
Polymers (Basel). 2024 Jun 12;16(12):1666. doi: 10.3390/polym16121666.
Globally, the demand for single-use plastics has increased due to the rising demand for food delivery and household goods. This has led to environmental challenges caused by indiscriminate dumping and disposal. To address this issue, non-degradable plastics are being replaced with biodegradable alternatives. Polylactic acid (PLA) is a type of biodegradable plastic that has excellent mechanical properties. However, its applications are limited due to its low crystallinity and brittleness. Studies have been conducted to combat these limitations using carbon or inorganic nucleating agents. In this study, waste cement and PLA were mixed to investigate the effect of the hybrid inorganic nucleating agent on the crystallinity and mechanical properties of PLA. Waste cement accelerated the lamellar growth of PLA and improved its crystallinity. The results indicate that the flexural and impact strengths increased by approximately 3.63% and 76.18%, respectively.
在全球范围内，由于食品外卖和家居用品需求的不断增长，一次性塑料的需求也随之增加。这导致了因随意倾倒和处置而引发的环境挑战。为了解决这个问题，不可降解塑料正被可生物降解的替代品所取代。聚乳酸（PLA）是一种具有优异机械性能的可生物降解塑料。然而，由于其低结晶度和脆性，其应用受到限制。已经开展了使用碳或无机成核剂来克服这些限制的研究。在本研究中，将废弃水泥与PLA混合，以研究这种混合无机成核剂对PLA结晶度和机械性能的影响。废弃水泥加速了PLA的片晶生长并提高了其结晶度。结果表明，弯曲强度和冲击强度分别提高了约3.63%和76.18%。
