| 球磨法制备的纤维素纳米晶补强生物基聚酯橡胶复合材料的性能研究 |
| Study on Properties of BPE Reinforced with CNCs Prepared by Ball Milling Method |
| 投稿时间：2024-03-21 修订日期：2024-03-21 |
| DOI：10.12136/j.issn.1000-890X.2026.01.0026 |
| 中文关键词: 纤维素纳米晶 生物基聚酯橡胶 胶乳复合法 拉伸性能 动态力学性能 |
| 英文关键词: CNCs BPE latex composite method tensile property dynamic mechanical property |
| 基金项目:国家自然基金专项项目（52341301） |
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| 中文摘要: |
| 以微晶纤维素（MCC）通过球磨法制备的纤维素纳米晶（CNCs）作为补强剂，以生物基聚酯橡胶（BPE）作为基体材料，通过胶乳复合法制备全生物基CNCs/BPE复合材料，并对其结构和性能进行研究。结果表明：CNCs的粒径随着MCC球磨时间的延长先减小后增大，球磨2 h时CNCs的中值粒径（长度）最小为174 nm，宽度为（40±5） nm，长径比为435%，结晶度为90.2%；随着CNCs用量的增大，CNCs/BPE复合材料的拉伸强度和储能模量先增大后减小，玻璃化转变温度先升高后降低；CNCs用量为40份时其补强效果最佳，CNCs/BPE复合材料的拉伸强度提高了400%。 |
| 英文摘要: |
| Cellulose nanocrystal（CNCs）were prepared by ball milling microcrystalline cellulose（MCC） as reinforcing agents，and bio based polyester rubber（BPE） was used as the matrix material to prepare a fully bio based CNCs/BPE composites by latex composite method，and their structures and properties were studied.The results showed that the particle diameter of CNCs decreased at first and then increased with the extension of the time for MCC ball milling.The median particle diameter was the smallest（length） at 174 nm after 2 hours of ball milling，with a width of （40±5） nm，an aspect ratio of 435% and a crystallinity of 90.2%.As the amount of CNCs increased，the tensile strength and storage modulus of CNCs/BPE composite at first increased and then decreased，the glass transition temperature at first increased and then decreased.CNCs showed the best reinforcement effect when CNCs dosage was 40 phr，and the tensile strength of CNCs/BPE composite increased by 400%. |
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