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球形CaCO₃:合成,表征,表面修饰和作为天然复合材料中强化填充剂的有效性

Khansinee Longkaew¹, Alain Gibaud², Wasan Tessanan¹

¹Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Payathai, Bangkok 10400, Thailand.

|November 14, 2023

概括

在表面处理时,合成的亚微米碳酸 (CaCO3) 颗粒显著提高了天然 (NR) 复合材料的机械性能. 这种经过处理的填充剂作为强化剂,在NR应用中提高拉伸强度.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

天然 (NR) 具有出色的弹性,但需要加强填充剂以提高机械性能.
碳酸 (CaCO3) 通常是复合材料中的非增强填充剂.
亚微米,球形的CaCO3被合成并作为一种潜在的增强填充剂进行了研究.

研究的目的:

在亚微米尺度上合成球形CaCO3,有或没有表面处理.
为了评估这种合成的CaCO3作为NR复合材料中的增强填充剂的有效性.
了解填充剂表面处理对NR复合材料性能的影响.

主要方法:

球形CaCO3颗粒的合成.
使用橄肥对CaCO3进行表面处理.
使用SEM,TEM,XRD,ATR-FTIR和拉曼光谱学对CaCO3的表征.
制造和机械测试NR/CaCO3复合材料在各种填充载荷 (0-60 phr).

主要成果:

与未经处理的CaCO3和纯NR相比,表面处理的CaCO3显著提高了NR复合材料的抗拉强度.
为了提高拉伸强度,最优的填充物负载被发现为20phr.
治疗的CaCO3的改善界面相互作用和疏水性有助于强化.
断裂时的延长显示了NR/经过处理的CaCO3复合材料的轻微减少.
SEM和FTIR证实了NR矩阵内CaCO3的vaterite多态和稳定性.

结论:

颗粒大小和表面处理对于提高复合材料的机械性能至关重要.
合成的球形CaCO3,特别是当表面处理时,显示出作为天然的增强填充剂的潜力.
这项研究为CaCO3在聚合物复合材料中的更广泛应用开辟了道路.

关键词:

碳酸的碳酸是一种碳酸.天然天然的使用.增强填充剂的填充剂可以加强.球体形状的球体形状.表面处理表面处理

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