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首页> 外文期刊>Journal of Applied Polymer Science >STRUCTURE AND BASIC PROPERTIES OF AMINATED PET
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STRUCTURE AND BASIC PROPERTIES OF AMINATED PET

机译：改性PET的结构和基本性能

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The triethylenetetramine (TETTA) surface-modification process for fibers, consisting of short-time annealing and high-temperature treating the fibers previously padded in TETTA, has been developed. The annealing (60 s, 170 degrees C) of the fibers was performed to restrict the reaction on the surface. To characterize the structure and properties of TETTA-modified fibers, IR spectroscopy, DSC, and X-ray diffraction were applied and critical dissolution time, dye uptake, density, and basic physical-mechanical properties were determined. It was shown that after annealing and aminolysis of the fibers T-g increases to 115 degrees C, while the crystallinity index (determined by DSC) is changed from 33 to 46% (X-ray crystallinity increased from 47 to 59%) and critical dissolution time increased from 12.9 to 58.9 min, depending on the time of aminolysis. The results obtained suggested the existence of two simultaneous processes during the aminolysis: macromolecular scission responsible for introducing the amine groups at the surface and partial crystallization of PET. (C) 1996 John Wiley & Sons, Inc. [References: 15]
机译：已经开发出一种用于纤维的三亚乙基四胺（TETTA）表面改性工艺，该工艺包括短时退火和高温处理先前填充在TETTA中的纤维。进行纤维的退火（60s，170℃）以限制表面上的反应。为了表征TETTA改性纤维的结构和性能，应用了红外光谱，DSC和X射线衍射，并确定了关键的溶解时间，染料吸收率，密度和基本物理机械性能。结果表明，纤维退火和氨解后，Tg增加到115℃，而结晶度（由DSC测定）从33％变为46％（X射线结晶度从47％上升至59％）和临界溶解时间从12.9分钟增加到58.9分钟，具体取决于氨解时间。获得的结果表明在氨解过程中存在两个同时的过程：负责将胺基引入表面的大分子分裂和PET的部分结晶。 （C）1996 John Wiley＆Sons，Inc. [参考：15]

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