| PET切片低聚物的萃取工艺及其表征 |
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| 引用本文： | 张新忠,陈彦模,张瑜,陈龙,魏家瑞,戴钧明,王树霞. PET切片低聚物的萃取工艺及其表征[J]. 合成技术及应用, 2009, 24(1): 1-4 |
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| 作者姓名： | 张新忠 陈彦模 张瑜 陈龙 魏家瑞 戴钧明 王树霞 |
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| 作者单位： | 纤维材料改性国家重点实验室,上海,201620;东华大学材料科学与工程学院,上海,201620;中国石化仪征化纤股份有限公司技术中心,江苏,仪征,211900;东华大学材料科学与工程学院,上海,201620;中国石化仪征化纤股份有限公司技术中心,江苏,仪征,211900 |
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| 摘 要： | 采用索氏萃取法从PET切片中提取低聚物，考察了切片尺寸、萃取时间与萃取量的关系；运用分子质量分布、紫外光谱、红外光谱、DSC进行了表征。结果表明：采用氯仿做萃取剂，80℃下连续回流提取18h可作为常规PET切片低聚物萃取终点的定量方法；提取出的低聚物是混合物，其主要成分为环状三聚物；环状低聚物在PET熔融结晶过程中起到了结晶成核剂的作用。
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| 关 键 词： | 聚对苯二甲酸乙二醇酯切片 低聚物 萃取 表征 |
Characterization and extraction technique of oligomers in PET |
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| Zhang Xinzhong,Chen Yanmo,Zhang Yu,Chen Long,Wei Jiarui,Dai Junming,Wang Shuxia. Characterization and extraction technique of oligomers in PET[J]. Synthetic Technology and Application, 2009, 24(1): 1-4 |
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| Authors: | Zhang Xinzhong Chen Yanmo Zhang Yu Chen Long Wei Jiarui Dai Junming Wang Shuxia |
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| Affiliation: | Zhang Xinzhong~(1,2),Chen Yanmo~(1,Zhang Yu~(1,Chen Long~(1,Wei Jiarui~3,Dai Junming~(2,3),Wang Shuxia~3 (1.State Key Laboratory for Modification of Chemical Fibers & Polymer Materials,Shanghai 201620,China,2.College of Material science & Engineering,Donghua University,3.Technical Center of Yizheng Chemical Fiber Co.Ltd.,Yizheng Jiangsu 211900,China) |
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| Abstract: | The extraction technique of oligomers from PET chip was studied by soxhlet extraction,the size of PET chips and time of extraction on the extraction quantities of oligomers was investigated.The oligomers was characterized by molecular weight distribution,UV and FT-IR spectrum,DSC.The study results showed that extraction end point can be determined by continuous reflux extraction for 18 hours at 80℃as quantitative method for normal PET chips by chloroform as extraction menstrual;The extracted oligomers was mostly cyclic trimer;The cyclic oligomer acts as nucleating agent during the process of PET melt crystallization. |
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| Keywords: | PET chips oligomers extraction characterization |
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