A spectroscopic approach to assess transport properties of water vapor in PLA

被引：10

作者：

De Santis, Felice ^{[1
]}

Gorrasi, Giuliana ^{[1
]}

Pantani, Roberto ^{[1
]}

机构：

[1] Univ Salerno, Dept Ind Engn, I-84084 Fisciano, SA, Italy

来源：

POLYMER TESTING | 2015年 / 44卷

关键词：

Poly(Lactic acid); FTIR; Crystallinity; Diffusivity; Water vapor; CRYSTALLIZATION KINETICS; HYDROLYTIC DEGRADATION; TEMPERATURE; SORPTION;

D O I：

10.1016/j.polymertesting.2015.03.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The aim of this work is to describe in detail an experimental approach to quantitatively investigate water vapor transport properties in Poly (lactic acid), PLA. The approach is based on in situ time resolved Fourier Transform Infrared Spectroscopy, FTIR, in transmission mode, and provides a mean for monitoring accurately the penetrant sorption kinetics. FTIR spectra were analyzed by a deconvolution procedure, and the area of a specific peak (at 3651 cm(-1)) was directly correlated to the amount of water inside the sample. The time evolution of this area was first normalized by using a peak uninfluenced by the amount of water and then interpolated to obtain the diffusivity parameter. The results were in good agreement with those obtained by more classical, and more complex microgravimetric methods. (C) 2015 Elsevier Ltd. All rights reserved.

引用

收藏

页码：15 / 22

页数：8

相关论文

共 15 条

[1] On the extraction of diffusion coefficients from gravimetric data for sorption of small molecules by polymer thin films [J].

Balik, CM .

MACROMOLECULES, 1996, 29 (08) :3025-3029

[2] Structure/transport property relationships within nanoclay-filled polyurethane materials using polycaprolactone-based masterbatches [J].

Benali, Samira ;

Gorrasi, Giuliana ;

Bonnaud, Leila ;

Dubois, Philippe .

COMPOSITES SCIENCE AND TECHNOLOGY, 2014, 90 :74-81

[3] A novel spectroscopic approach to investigate transport processes in polymers: the case of water-epoxy system [J].

Cotugno, S ;

Larobina, D ;

Mensitieri, G ;

Musto, P ;

Ragosta, G .

POLYMER, 2001, 42 (15) :6431-6438

[4] Nucleation and crystallization kinetics of poly(lactic acid) [J].

De Santis, Felice ;

Pantani, Roberto ;

Titomanlio, Giuseppe .

THERMOCHIMICA ACTA, 2011, 522 (1-2) :128-134

[5] The Effect of Heat Treatment on Water Sorption in Polylactide and Polylactide Composites via Changes in Glass-Transition Temperature and Crystallization Kinetics [J].

Du, An ;

Koo, Donghun ;

Ziegler, Mary ;

Cairncross, Richard A. .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2011, 49 (12) :873-881

[6] INVESTIGATION OF STRUCTURE OF SOLUTION GROWN CRYSTALS OF LACTIDE COPOLYMERS BY MEANS OF CHEMICAL-REACTIONS [J].

FISCHER, EW ;

STERZEL, HJ ;

WEGNER, G .

KOLLOID-ZEITSCHRIFT AND ZEITSCHRIFT FUR POLYMERE, 1973, 251 (11) :980-990

[7]

Gorrasi G, 2013, MACROMOL RES, V21, P1110

[8] Effect of PLA grades and morphologies on hydrolytic degradation at composting temperature: Assessment of structural modification and kinetic parameters [J].

Gorrasi, Giuliana ;

Pantani, Roberto .

POLYMER DEGRADATION AND STABILITY, 2013, 98 (05) :1006-1014

[9] A novel instrument for the direct measurement of moisture permeation [J].

Howell, D. Logan ;

Hallman, Russell, Jr. ;

Stowe, Ashley C. .

POLYMER TESTING, 2014, 34 :120-130

[10] Time-Resolved Fourier Transform Infrared Spectroscopy, Gravimetry, and Thermodynamic Modeling for a Molecular Level Description of Water Sorption in Poly(ε-caprolactone) [J].

Musto, Pellegrino ;

Gaizia, Michele ;

Pannico, Marianna ;

Scherillo, Giuseppe ;

Mensitieri, Giuseppe .

JOURNAL OF PHYSICAL CHEMISTRY B, 2014, 118 (26) :7414-7429