@article {RN44,
	title = {Deuterium NMR Study of Orientational Order in Cellulosic Network Microfibers},
	journal = {Macromolecules},
	volume = {43},
	number = {13},
	year = {2010},
	note = {n/a},
	pages = {5749-5755},
	type = {Journal Article},
	abstract = {<p>Deuterium NMR was used to investigate the orientational order in a composite cellulosic formed by liquid crystalline acetoxypropylcellulose (A PC) and demented nematic 4{\textquoteright}-penty1-4-cyanobiphenyl (5CB-4 alpha d(2)) with the per centage of 85\% A PC by weight Three forms of the composite including electro spun microfibers, thin film and bulk samples were analyzed The NMR results initially suggest two distinct scenarios, one whet e the 503-alpha d(2), is confined to small droplets with dimensions smaller than the magnetic coherence length and the other where the 503-alpha d(2) molecules arc aligned with the A PC network chains Polarized optical microscopy (POW from thin film samples along with all the NMR results show the presence of 5CB-alpha d(2) droplets in the composite systems with a nematic wetting layer at the APC-5CB-alpha d(2) interface that experiences and order disorder transition driven by the polymer network N-I transition The characterization of the APC network I-N transition shows a pronounced subcritical behavior within a heterogeneity scenario</p>
},
	keywords = {liquid-crystals phase-transition nanofibers fibers layer},
	issn = {0024-9297},
	doi = {10.1021/ma100882w},
	url = {<Go to ISI>://WOS:000279573600038},
	author = {Kundu, S and Feio, G. and Pinto, LFV and P. L. Almeida and J. L. Figueirinhas and M. H. Godinho}
}
