Preparation and performance evaluation of bio-based wood-plastic composites from ricinoleic acid ring-openning epoxidized soybean oil

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2024-08-02 DOI:10.1016/j.reactfunctpolym.2024.106015

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Abstract

With the enhancement of sustainable development concepts and environmental protection awareness, replacing fossil resources with biomass to prepare unsaturated polyester resins is an essential approach to achieve green chemistry. In this study, a bio-based unsaturated polyester (ERM) was synthesized using epoxidized soybean oil and castor oil acid as raw materials. The reinforced modification of two fast-growing woods, Cunninghamia lanceolata (Chinese fir) and Pinus sylvestris var. mongolica (Pine), was investigated. The structure and molecular weight of the polyester at various stages were detected through infrared spectroscopy, proton nuclear magnetic resonance, and size exclusion chromatography. It was found that compared to the original wood, the density of the modified Cunninghamia lanceolata (Chinese fir) and Pinus sylvestris var. mongolica (Pine) increased from 0.36 g/cm³ and 0.45 g/cm³ to 0.9 g/cm³ and 0.78 g/cm³, respectively. Their compressive strength increased from 30.1 MPa and 32.1 MPa to 73.9 MPa and 73.8 MPa, respectively. The water absorption rate decreased from 167.3% and 103.8% to 16.86% and 16.59%, respectively, and thermal stability also showed a significant improvement.

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利用蓖麻油酸开环环氧化大豆油制备生物基木塑复合材料及其性能评估

随着可持续发展理念和环保意识的增强，用生物质替代化石资源制备不饱和聚酯树脂是实现绿色化学的必要途径。本研究以环氧化大豆油和蓖麻油酸为原料，合成了一种生物基不饱和聚酯（ERM）。研究了两种速生木材（冷杉和松树）的增强改性。通过红外光谱、质子核磁共振和尺寸排阻色谱法检测了不同阶段聚酯的结构和分子量。研究发现，与原始木材相比，改性木材（冷杉）和变种松木（松树）的密度分别从 0.36 g/cm 和 0.45 g/cm 增加到 0.9 g/cm 和 0.78 g/cm。抗压强度分别从 30.1 兆帕和 32.1 兆帕增加到 73.9 兆帕和 73.8 兆帕。吸水率分别从 167.3% 和 103.8% 降至 16.86% 和 16.59%，热稳定性也有显著改善。

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.