Synchronously Strengthen and Toughen Polypropylene Using Tartaric Acid-Modified Nano-CaCO3

Abstract

In order to overcome the challenge of synchronously strengthening and toughening polypropylene (PP) with a low-cost and environmental technology, CaCO3 (CC) nanoparticles are modified by tartaric acid (TA), a kind of food-grade complexing agent, and used as nanofillers for the first time. The evaluation of mechanical performance showed that, with 20 wt.% TA-modified CC (TAMCC), the impact toughness and tensile strength of TAMCC/PP were 120% and 14% more than those of neat PP, respectively. Even with 50 wt.% TAMCC, the impact toughness and tensile strength of TAMCC/PP were still superior to those of neat PP, which is attributable to the improved compatibility and dispersion of TAMCC in a PP matrix, and the better fluidity of TAMCC/PP nanocomposite. The strengthening and toughening mechanism of TAMCC for PP involves interfacial debonding between nanofillers and PP, and the decreased crystallinity of PP, but without the formation of β-PP. This article presents a new applicable method to modify CC inorganic fillers with a green modifier and promote their dispersion in PP. The obtained PP nanocomposite simultaneously achieved enhanced mechanical strength and impact toughness even with high content of nanofillers, highlighting bright perspective in high-performance, economical, and eco-friendly polymer-inorganic nanocomposites.

Bio‐based compatibiliser enhancing the interface properties of CaCO3/recycled high‐density polyethylene composites

“…In addition, CaCO 3 particles dispersed in the polymer matrix form microcracks in the polymer matrix. [ 28 ] Each CaCO 3 particle can generate or terminate the microcracks generated by other particles. When the composite is subjected to an impact, complex microcracks can form yield shear bands that can absorb a large amount of deformation energy and enhance the impact resistance of the composites.…”

Synthesis and Performance Evaluation of Nano-Calcium Carbonate-Modified Geopolymers Incorporating Fly Ash and Manganese Slag: A Comprehensive Investigative Study

“…This dynamic imparts elevated mechanical resilience [11]. Preeminent nano-materials for geopolymer augmentation encompass nano-SiO 2 (NS), nano-TiO 2 (NT), nano-Al 2 O 3 (NA), nano-clay (NC), carbon nanotubes (CNT), and graphene oxide (GO) [12]. Distinguished by biocompatibility, non-toxicity, heightened whiteness, and chromatic purity, nano-sized CaCO 3 assumes dimensions markedly diminutive in scale, approximating one-tenth of regular light calcium particles.…”

A nanoconcrete welding strategy for constructing high-performance wound dressing

“…Many promising polymers and bioceramics with high biocompatibility have to be strengthened and/or toughened to meet the demands of clinical applications. One of the classic methods for strengthening and toughening is to incorporate second-phase nanoparticles in the matrix [ [3] , [4] , [5] , [6] , [7] , [8] ]. The interfacial attraction between nanoparticle and polymer chain is the key to block microcrack for toughening.…”