非晶态聚合物amorphous polymer又称无定形聚合物。分子形状、分子相互排列为无序状态的高分子。对无定形或非晶太聚合物来说，非晶态的含义等同于无定形态。
四氢硼钠在己烷和甲苯溶剂中，不易引发丙烯酸第三丁酯的聚合反应，但在吡啶和四氢呋喃中能引发聚合，亦得到非晶态聚合物。
NaBH4 in hexane or toluene would not initiate the polymerization unless pyridine or THF was used as solvent, but an amorphous polymer was the product.
聚合物材料多为半晶态，晶畴和非晶畴共存。
Polymers are usually semi-crystalline materials in which crystalline and amorphous domains coexist.
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