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| Simultaneous Improvements of Thermal Stability and Mechanical Properties of Poly（propylene carbonate） via Incorporation of Environmental-friendly Polydopamine | |
| 引用本文： | 陈枫,傅强. Simultaneous Improvements of Thermal Stability and Mechanical Properties of Poly（propylene carbonate） via Incorporation of Environmental-friendly Polydopamine[J]. 高分子科学, 2014, 32(12): 1724-1736. DOI: 10.1007/s10118-014-1518-6 |
| 作者姓名： | 陈枫 傅强 |
| 作者单位： | College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University |
| 基金项目： | financially supported by the National Natural Science Foundation of China(Nos.51173112 and 21274095) |
| 摘 要： | Inspired by the photoprotection, radical scavenging of melanin together with versatile adhesive ability of mussel proteins, polydopamine（PDA） nanoparticles were successfully prepared and incorporated into environmentally friendly polymer, poly（propylene carbonate）（PPC） via solvent blending. The prepared composites exhibited excellent thermal stability in air and nitrogen atmosphere and extraordinary mechanical properties. The composites displayed eminent increase of temperature at 5% weight loss（T5%） by 30-100 K with 0.3 wt%-2.0 wt% loadings, meanwhile, the tensile strength and Young＇s modulus were significantly improved from 11.5 MPa and 553.7 MPa to 40.5 MPa and 2411.2 MPa, respectively. The kinetic calculation indicated that improvement of T5% is presumably derived from suppressing chain-end unzipping. The glass transition temperature（Tg） of the PPC/PDA composites increased by 8-10 K. This is probably due to hydrogen bonding interaction since the abundant proton donors along PDA chains would interact with proton acceptors like C = O and C―O―C in PPC which would cause restriction of segmental motion of PPC chains. |
| 关 键 词： | 聚碳酸亚丙酯 热稳定性 多巴胺 力学性能 环保 玻璃化转变温度 掺入 复合材料 |
Simultaneous improvements of thermal stability and mechanical properties of poly(propylene carbonate) via incorporation of environmental-friendly polydopamine |
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| Yu-han Li,Mi Zhou,Cheng-zhen Geng,Feng Chen,Qiang Fu. Simultaneous improvements of thermal stability and mechanical properties of poly(propylene carbonate) via incorporation of environmental-friendly polydopamine[J]. Chinese Journal of Polymer Science, 2014, 32(12): 1724-1736. DOI: 10.1007/s10118-014-1518-6 | |
| Authors: | Yu-han Li Mi Zhou Cheng-zhen Geng Feng Chen Qiang Fu |
| Affiliation: | 1. College of Polymer Science and Engineering, State Key Laboratory of Polymer MaterialsEngineering, Sichuan University, Chengdu, 610065, China |
| Abstract: | Inspired by the photoprotection, radical scavenging of melanin together with versatile adhesive ability of mussel proteins, polydopamine (PDA) nanoparticles were successfully prepared and incorporated into environmentally friendly polymer, poly(propylene carbonate) (PPC) via solvent blending. The prepared composites exhibited excellent thermal stability in air and nitrogen atmosphere and extraordinary mechanical properties. The composites displayed eminent increase of temperature at 5% weight loss (T 5%) by 30–100 K with 0.3 wt%–2.0 wt% loadings, meanwhile, the tensile strength and Young’s modulus were significantly improved from 11.5 MPa and 553.7 MPa to 40.5 MPa and 2411.2 MPa, respectively. The kinetic calculation indicated that improvement of T 5% is presumably derived from suppressing chain-end unzipping. The glass transition temperature (T g) of the PPC/PDA composites increased by 8–10 K. This is probably due to hydrogen bonding interaction since the abundant proton donors along PDA chains would interact with proton acceptors like C=O and C-O-C in PPC which would cause restriction of segmental motion of PPC chains. |
| Keywords: | Biodegradable polymers Reinforcements Mechanical properties Thermal properties Free radical scavenging |
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