本研究利用二氧化碳成功合成含聚碳酸酯-聚醚之共聚合物，並探討使用的鹼為碳酸鉀時，其所可能進行的反應機制，推測出不論起始物為對苯二甲醇及對氯甲基苯或是只有單一的對氯甲基苯，在反應過程中，皆會形成含碳酸根陰離子的中間產物，此中間產物若直接與對氯甲基苯聚合，則會形成聚碳酸酯的聚合物，若此中間產物本身先進行脫二氧化碳的路徑，再與對氯甲基苯聚合，則會形成聚醚的聚合物，在不同的條件下，如:不同的溫度、不同的鹼性條件及利用不同方式通入二氧化碳等，可得到不同比例的聚碳酸酯-聚醚之共聚合物。
將這些高分子進行性質測試，其本性黏度介於0.19~0.34 dL/g之間。在熱性質的測試方面，這些高分子在氮氣下損失5%重量的溫度在482~536 K之間。其玻璃轉換溫度分布於64.21~94.33oC之間，發現聚碳酸酯含量較高的材料，其耐熱性也會相對地提高，在XRD測試方面，發現聚碳酸酯含量比例較高的高分子，其分子與分子間的堆疊間距變大，在不同溫度所形成的高分子，其晶體成長方向也有改變的現象。

In this study, the poly[(p-xylylene carbonate)-co-(p-xylylene oxide)] was synthesized by the polyaddition reaction of p-xylylene glycol, p-xylylene dichloride and carbon dioxide in N-methyl-2-pyrrolidone for 30h in air, and we investigated the mechanism in the presence of potassium carbonate. We proposed that no matter the starting materials are p-xylylene glycol and p-xylylene dichloride or p-xylylene dichloride only, the intermediate of carbonate anion was formed. If the intermediate were polymerized with p-xylylene dichloride directly, the product is polycarbonate. If the intermediate decarboxylates before reacts with p-xylylene dichloride, the product is polyether. We designed a series of reactions under different temperatures, several kinds of base and added carbon dioxide by two ways. We obtained co-polymers with several proportions of polycarbonate-polyether.

Test properties of the synthesized polymers indicated that these polymers having intrinsic viscosity of 0.19~0.34 dL/g. The temperature of 5% weight loss of these polymers were in the range of 482~536 K under nitrogen atmosphere, and the glass transition temperature of these polymers were in the range of 64.21~94.33oC. Under such results, we obtained that the materials with higher proportions of polycarbonate and have greater thermostability, and increasing the distance of packed structures increase. When the materials are formed at different temperatures, the crystalline direction of these materials showed incremental or reductive phenomenon.

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