Solubilities of Nitrogen in Poly-Lactide Acid Determined by Quartz Crystal Microbalance

化学工业与工程

Chemcial Industry and Engineering

2006, Vol. 23

Issue (4) :301-304 DOI:

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Solubilities of Nitrogen in Poly-Lactide Acid Determined by Quartz Crystal Microbalance

ZHU Zhao-you~1,GAO Jun~2,WANG Zhong-wei~2,XU Dong-mei~2(1.College of Chemical Engineering,Qingdao University of Science and Technology,Shandong Qingdao 266042,China;2.College of Chemical Engineering,Shandong University of Science and Technology,Shandong Qingdao 266510,China)

(1.College of Chemical Engineering,Qingdao University of Science and Technology,Shandong Qingdao 266042,China;2.College of Chemical Engineering,Shandong University of Science and Technology,Shandong Qingdao 266510,China

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Abstract The solubilities of nitrogen in biodegradable poly-lactide acid(PLA) were determined by quartz crystal microbalance(QCM) under elevated pressures at different temperatures.The QCM consisted of two AT cut quartz crystals,of which one was working crystal,another one was used as a reference to account for the effects of pressure and gas viscosity on the crystals.The solubilities of nitrogen in polystyrene were measured to check the apparatus,and they showed well agreement with the reference data.Then the solubilities of nitrogen in poly-lactide acid were measured under elevated pressures at 295.82 K,305.25 K,314.83 K respectively,The results showed that the solubility of nitrogen in PLA increased with the increase of temperature and pressure,and had the same change as the other low critical temperature gases.

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Received 2006-07-15; published 2006-07-15

Cite this article:

ZHU Zhao-you~1,GAO Jun~2,WANG Zhong-wei~2,XU Dong-mei~2.Solubilities of Nitrogen in Poly-Lactide Acid Determined by Quartz Crystal Microbalance[J] Chemcial Industry and Engineering, 2006,V23(4): 301-304

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