Preparation and characterization of zeolite beta-polyurethane composite membranes

被引:20
作者
Aksoy, Eda Ayse
Akata, Burcu [1 ]
Bac, Nurcan
Hasirci, Nesrin
机构
[1] Middle E Tech Univ, Cent Lab, TR-06531 Ankara, Turkey
[2] Middle E Tech Univ, Dept Polymer Sci & Technol, TR-06531 Ankara, Turkey
[3] Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey
[4] Middle E Tech Univ, Dept Chem, TR-06531 Ankara, Turkey
关键词
zeolite beta; polyurethanes; composites; mechanical properties;
D O I
10.1002/app.25976
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Incorporation of zeolite into polyurethane (PU) membranes was investigated by using as-synthesized and calcined zeolite beta particles at two different loading contents (0.1 and 1 wt %). The chemical interaction between the zeolite beta crystals and PU was observed by ATR-FTIR spectroscopy. The SEM results suggested that the calcined zeolite beta crystals were more homogeneously dispersed in the composite membranes than the assynthesized zeolite beta crystals. DMA results demonstrated that all composite membranes had higher storage modulus in the rubbery state and higher stability towards thermal and mechanical degradation with respect to the control groups. Tensile testing results also showed increased tensile strength and elongation at break for all composite membranes. This study suggests that incorporating zeolite beta in its as-synthesized or calcined forms and at different amounts can be applied as an alternative method for tailoring the mechanical properties of PU membranes without changing its structural characteristics. (c) 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 3378-3387, 2007.
引用
收藏
页码:3378 / 3387
页数:10
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