Solid-State Polymerization of Poly(ethylene terephthalate): The Effect of Water Vapor in the Carrier Gas

被引：15
|
作者：
Filgueiras, Viviane [2 ]
Vouyiouka, Stamatina N. [1 ]
Papaspyrides, Constantine D. [1 ]
Lima, Enrique L. [2 ]
Pinto, Jose Carlos [2 ]
机构：
[1] Natl Tech Univ Athens, Sch Chem Engn, Lab Polymer Technol, Athens 15780, Greece
[2] Univ Fed Rio de Janeiro, COPPE, Programa Engn Quim, BR-21941972 Rio De Janeiro, Brazil
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2011年 / 296卷 / 02期
关键词：
gas-side mass transfer diffusion; nitrogen recycling; poly(ethylene terephthalate); solid state polymerization; water vapor; POLYETHYLENE TEREPHTHALATE; POLY(ETHYLENE TEREPHTHALATE); POLYCONDENSATION PROCESS; COMPREHENSIVE MODEL; REACTION-KINETICS; DIFFUSION; HYDROLYSIS; REACTOR; PET; SORPTION;
D O I：
10.1002/mame.201000201
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
SSP of PET has been thoroughly investigated under the regimes of chemical reaction and particle diffusion control. However, the majority of industrial PET plants operate under conditions of surface by-product diffusion control, mainly due to recycling cycles of the carrier gas. The presence of residual volatile by-products in the carrier gas (especially water) may affect adversely the polymerization reaction and the resulting polymer quality. For this reason, the effects caused by varying water vapor content of the carrier gas on the course of the PET SSP are analyzed, with emphasis on the intrinsic viscosity. The presence of small amounts of water in the carrier gas is found to exert a pronounced effect on the course of polymerization, leading to significant reduction of the molar masses of the final product.
引用
收藏
页码：113 / 121
页数：9
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