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The development of a global preferred orientation in the thermotropic phase of the propanoate ester of hydroxypropylcellulose subjected to shear flow is evaluated using time-resolving X-ray scattering procedures. At low shear rates the global orientation parameters, , , are close to zero, but at a critical shear rate which shows some dependence on the temperature, there is a marked increase in orientation with shear rate. However, a flow aligning regime is not attained for the shear rate rangedoi:10.52340/ns.2010.04 fatcat:ghwwgjzlujaxpf3g3l5hh5ky6m