The molecular orientation of crystalline and liqtiid crystalline states of poly(MMA-co-BMA)and ChN mixtures have been sttidied by X-ray diffraction.

• 用X－射线衍射法详细研究了ChN/Poly（MMA－co－BMA）共混体系在胆笛（Ch）相，近晶（S）相及结晶（K）态的分子排列。