Synthetic biodegradable polyesters tend to undergo slow biodegradation under ambient natural conditions and, hence, have been rejected or even banned recently in ecofriendly applications. Here, we demonstrate the preparation of polyesters exhibiting enhanced biodegradability, which were generated through a combination of old controversial macromolecules and aggregate theories. H₃PO₄-catalyzed diacid/diol polycondensation afforded polyester chains bearing chain-end −CH₂OP(O)(OH)₂ and inner-chain (−CH₂O)₂P(O)(OH) groups, which were subsequently treated with M(2-ethylhexanoate)₂ (M = Zn, Mg, Mn, and Ca) to form ionic aggregates of polyesters. The prepared ionic aggregates of polyesters, which were constructed with fertilizer ingredients (such as M²⁺ and phosphate), exhibit much faster biodegradability than that of the conventional polyesters under controlled soil conditions at 25 °C, while displaying comparable or superior rheological and mechanical properties.

中文翻译：

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用肥料成分构建的聚酯的快速可生物降解离子聚集体

合成的可生物降解聚酯在环境自然条件下往往会经历缓慢的生物降解，因此最近在环保应用中被拒绝甚至禁止。在这里，我们展示了通过结合旧有争议的大分子和聚集体理论产生的具有增强生物降解性的聚酯的制备方法。H ₃ PO ₄催化的二酸/二醇缩聚反应得到带有链端-CH ₂ OP(O)(OH) ₂和内链(-CH ₂ O) ₂ P(O)(OH)基团的聚酯链，它们是随后用 M(2-乙基己酸酯) _2处理（M = Zn、Mg、Mn 和 Ca）形成聚酯的离子聚集体。由肥料成分（如 M ²⁺和磷酸盐）构成的聚酯离子聚集体在 25 °C 的受控土壤条件下表现出比传统聚酯更快的生物降解性，同时表现出相当或优越的流变学和力学性能特性。