Thermo-regulated thermoplastic sugarcane bagasse-based biocomposite via solvent-free extrusion for energy-saving smart home
Thermo-regulated thermoplastic sugarcane bagasse-based biocomposite via solvent-free extrusion for energy-saving smart home
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DOI：
10.1016/j.cej.2023.141437
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发表时间：
2023-02
影响因子：
15.1
通讯作者：
Ying-Hua Zhang;Tianshi Li;Yifan Jin;Lixia Bao;Li Feng;Chen Lai;Kun Wei;Sibo Qiao;Qiue Cao-Qiue
中科院分区：
文献类型：
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作者：
Ying-Hua Zhang;Tianshi Li;Yifan Jin;Lixia Bao;Li Feng;Chen Lai;Kun Wei;Sibo Qiao;Qiue Cao-Qiue
相变材料在太阳能转换、热调节、余热回收等领域得到了广泛的应用。然而，可生物降解的室温相变材料在温控智能家居中的应用仍然是一个巨大的挑战，因为其在高温下的形状稳定性和加工性能较差。在这里，我们报道了一种无溶剂反应挤出工艺来制备一种热塑性甘蔗渣基生物复合材料(命名为TBP-50)，其中含有50wt%的十二醇基纳米胶囊PCM(NPCM)。所开发的TBP-50具有接近室温的相变点和约52兆焦耳−1的热稳定性，是可热加工的，在180C以下热稳定。超分子锁壳NPCM(50wt%)的高质量比赋予TBP-50优异的供热/制冷循环可靠性和热调节能力，并通过对采用尺寸稳定的TBP-50板材装饰的保温箱(30 L)和卧室(4.5m×35.0m×3m)的一系列模拟计算验证。此外，TBP-50还具有良好的力学性能：拉伸强度为9.6kJ/m−2，拉伸模数为6.73 Gpa，冲击强度为3.18kJ/m，邵氏表面硬度为68D。考虑到下一代节能环保家居装饰材料，本文通过典型挤出成型制备的TBP-50生物复合材料是天花板、隔板、地板、衣柜、书桌等的理想选择。
Phase change materials (PCMs) have been widely used in the sectors of solar energy conversion, thermal regulation, waste heat recovery, etc. However, it is still a huge challenge to utilize biodegradable room-temperature PCMs in thermo-regulated smart homes due to their poor shape stability and processability at high temperature. Herein, we report solvent-free reactive extrusion processes to prepare a thermoplastic sugarcane bagasse-based biocomposite (named TBP-50) containing 50 wt% dodecanol-based nanoencapsulated PCM (NPCM). The developed TBP-50 with the phase change point near room temperature and the enthalpy of about 52 J g−1is thermo-processable and thermally stable below 180 °C. The high mass ratio of supramolecular lock-shell NPCM (50 wt%) endows TBP-50 with excellent heating/cooling cycling reliability and thermal regulation ability that have been verified by a series of simulated calculations about an incubator (30 L) and a bedroom (4.5 m × 3.5 m × 3 m) decorated with dimensionally stable TBP-50 sheets. Moreover, TBP-50 shows acceptable mechanical properties: the tensile strength of 9.6 MPa, the tensile modulus of 6.73 GPa, the impact strength of 3.18 kJ m−2, and the Shore surface hardness of 68 D. Obvious biodegradation in the local soil environment is detected for TBP-50 and the six probable degradation steps are proposed in this work. Considering the next generation of energy-saving and environmental-friendly home-decorating materials, the herein prepared TBP-50 biocomposite via typical extrusion molding is an ideal choice as ceiling, clapboard, floorboard, wardrobe, desk, and so on.