Side-chain crystallization in alkyl-substituted cellulose esters and hydroxypropyl cellulose esters.The differences in side chain crystallization behavior between cellulose esters (CEs) and hydroxypropyl cellulose esters (HPCEs) were systematically investigated by a combination of differential scanning calorimetry (DSC) and small and wide-angle X-ray scattering techniques.  DSC investigation indicated that under the same side chain length, the fusion enthalpy and the number of crystallized CH2 of CEs were smaller than HPCEs. 
DSC
Side-chain crystallization in alkyl-substituted cellulose esters and hydroxypropyl cellulose esters.The differences in side chain crystallization behavior between cellulose esters (CEs) and hydroxypropyl cellulose esters (HPCEs) were systematically investigated by a combination of differential scanning calorimetry (DSC) and small and wide-angle X-ray scattering techniques.  For the CEs, the side chains are perpendicular to the main chain, while the side chains most probably tend to tilt to main chain in the HPCEs as was evidenced by X-ray scattering results. 
X-ray scattering