Crystalline structures of poly(L-lactide) formed under pressure and structure transitions with heating
文献类型：期刊论文
| 作者 | Huang SY ; Li HF ; Yu DH ; Jiang SC ; Chen XS ; An LJ |
| 刊名 | crystengcomm
 |
| 出版日期 | 2013 |
| 卷号 | 15期号:21页码:4372-4378 |
| 关键词 | EXTENDED-CHAIN CRYSTALS ISOTHERMAL CRYSTALLIZATION ABSORBABLE POLY(GLYCOLIDE) MELTING BEHAVIOR UNIFIED THEORY POLYETHYLENE PHASE MORPHOLOGY POLYMERS GROWTH |
| ISSN号 | 1466-8033 |
| 通讯作者 | huang sy |
| 中文摘要 | the isothermally crystallized poly(l-lactide) (plla) samples were obtained at 135 degrees c under pressures (pc) ranging from 1 bar to 2.5 kbar. the crystalline structures, the structure transition, and thermal properties of the prepared samples were investigated by wide-angle x-ray diffraction (waxd), real time synchrotron small-angle x-ray scattering (sr-saxs) and differential scanning calorimetry (dsc) during this process. the structural parameters, such as the size of crystallites, the inverse spacing, the long periods and lamellae thicknesses decrease with pressure increasing. based on the peculiarities of crystalline structure and crystallization behaviors, low and high pressure regions were revealed: disordered alpha crystal was formed in the high pressure region (>1 kbar). a layer located intermediate between crystalline and melt-like regions was observed, which finally took on crystalline order. reformation, disorder to order transformation, and recrystallization during heating completely changed the previous crystalline and stacking structure, a more stable crystalline structure was newly formed. the melting behaviors of samples indicate the crystalline and stacking structure formed under high pressure are more stable. operation of lateral growth and thickness growth can explain well the influence of pressure on the structure, stability and the disorder to order transformation. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000318562900018 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50290]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Huang SY,Li HF,Yu DH,et al. Crystalline structures of poly(L-lactide) formed under pressure and structure transitions with heating[J]. crystengcomm,2013,15(21):4372-4378. |
| APA | Huang SY,Li HF,Yu DH,Jiang SC,Chen XS,&An LJ.(2013).Crystalline structures of poly(L-lactide) formed under pressure and structure transitions with heating.crystengcomm,15(21),4372-4378. |
| MLA | Huang SY,et al."Crystalline structures of poly(L-lactide) formed under pressure and structure transitions with heating".crystengcomm 15.21(2013):4372-4378. |
入库方式： OAI收割
来源：长春应用化学研究所
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