| 聚乳酸与麦草纤维共混物的研究 |
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| 引用本文： | 高勤卫,徐晨,徐哲,赵丽芳.聚乳酸与麦草纤维共混物的研究[J].林产化学与工业,2012,32(4):1-4. |
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| 作者姓名： | 高勤卫 徐晨 徐哲 赵丽芳 |
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| 作者单位： | 南京林业大学化学工程学院,江苏南京,210037 |
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| 基金项目： | 国家自然科学基金资助项目，江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 以N-甲基吗啉-N-氧化物为溶剂,制备聚L-乳酸(PLLA)与麦草纤维(WSF)的共混溶液,并制备PLLA与WSF的共混物。采用傅里叶变换红外光谱、差示扫描量热法和X射线衍射等方法对PLLA/WSF共混物进行表征,探讨PLLA/WSF共混物中两组分的相容性和结晶性。结果表明,聚乳酸和麦草纤维的N-甲基吗啉-N-氧化物溶液可以均匀混合形成共混溶液。在PLLA/WSF共混物中,PLLA与WSF两组分之间的相互作用较强,具有较好的相容性。PLLA/WSF共混物的组成对其形态与性能具有显著影响。随着PLLA用量的增加,共混物的玻璃化温度逐步降低。当PLLA与WSF的质量比小于6∶4时,共混物为非晶态物质,而当PLLA与WSF的质量比大于6∶4时,共混物则具有结晶结构,且结晶熔点随着PLLA质量分数的增加而增加。因此,通过改变PLLA和WSF组分的配比,可以制备不同性能的可生物降解高分子材料。
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| 关 键 词： | 聚L-乳酸 麦草纤维 共混物 |
Blends of Poly(L-lactic Acid) and Wheat Straw Fiber |
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| GAO Qin-wei
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XU Chen
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XU Zhe
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ZHAO Li-fang.Blends of Poly(L-lactic Acid) and Wheat Straw Fiber[J].Chemistry & Industry of Forest Products,2012,32(4):1-4. |
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| Authors: | GAO Qin-wei XU Chen XU Zhe ZHAO Li-fang |
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| Institution: | (College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China) |
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| Abstract: | The blend solutions of poly(L-lactic acid)(PLLA) and wheat straw fiber(WSF) were prepared in the solvent of N-methyl morpholine-N-oxide.Then the blends of PLLA and WSF were also prepared.Fourier transform infrared spectroscopy,differential scanning calorimetry and X-ray diffraction were performed to determine PLLA/WSF blends.The compatibility and crystalline of PLLA and WSF in blends were investigated.The results show that PLLA and WSF can form a homogeneous mixture solution in N-methyl morpholine-N-oxide.Strong interaction between PLLA and WSF can be detected,which suggests good compatibility between the two components in PLLA/WSF blends.The morphology and properties of PLLA/WSF blends vary with the ratios of PLLA to WSF.With increasing PLLA contents,the glass transition temperatures of PLLA/WSF blends gradually reduce to that of PLLA.Both PLLA and WSF are crystalline,while PLLA/WSF blends are amorphous when the ratio of PLLA to WSF is less than 6 ∶ 4.When the ratio of PLLA/WSF is more than 6 ∶ 4,the blend is crystalline and their melting points increase with increasing PLLA contents.Thus biodegradable polymeric materials with different properties can be prepared through changing ratios of PLLA to WSF. |
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| Keywords: | poly(L-lactic acid) wheat straw fiber blend |
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