000			02170nam a2200301Ia 4500
003			MX-MdCICY
005			20250625124727.0
040			_cCICY
090			_aB-8794
245	1	0	_aProperties of composite membranes based on sulfonated poly(ether ether ketone)s (SPEEK)/phenoxy resin (PHR)for direct methanol fuel cells usages
490	0		_vJournal of Membrane Science, 297(1-2), p.162-173, 2007
520	3		_aA series of proton exchange composite membranes were prepared by solution method through blending of methyl substituted highly sulfonated poly (ether ether ketone)s (SPEEK)with phenoxy resin (PHR)containing methyl groups and biphenyl structure, to improve the selective permeability and the mechanical properties. The physical and electrochemical properties of the composite membranes were characterized in detail as a function of weight fraction of PHR. The composite membranes exhibited moderated swelling properties and ion exchange capacities for electro-membrane applications. The membranes blended with PHR showed good methanol resistance property and excellent proton conductive capability (0.031-0.0627 S/cm). The methanol diffusion coefficients of composite membranes (10.3×10-7 to 5.4×10-7 cm2/s)were much lower than that of pure SPEEK membranes (1.47×10-6 cm2/s), the blends selectivity for application to theDMFCwas impacted by PHR. The membranes also obtained better mechanical properties and were strong and tough enough to be used as functional proton exchange membrane materials. The composite membranes showed good potential usage in direct methanol fuel cells (DMFCs).
650	1	4	_aSPEEK
650	1	4	_aPHR
650	1	4	_aPOLYMER BLENDS
650	1	4	_aPROTON EXCHANGE MEMBRANES
650	1	4	_aMEMBRANE SELECTIVE PERMEABILITY
700	1	2	_aCai, H.
700	1	2	_aShao, K.
700	1	2	_aZhong, S.
700	1	2	_aZhao, C.
700	1	2	_aZhang, G.
700	1	2	_aLi, X.
700	1	2	_aNa, H.
856	4	0	_uhttps://drive.google.com/file/d/1b-iT8kOTVVOhzuu-Ml7n6g2mweOl3scm/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942			_2Loc _cREF1
008			250602s9999 xx |||||s2 |||| ||und|d
999			_c43095 _d43095