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首页> 外文期刊>Journal of Applied Polymer Science >Effect of Nucleation Agents on the Crystallization of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB)
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Effect of Nucleation Agents on the Crystallization of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB)

机译：成核剂对聚（3-羟基丁酸酯-co-4-羟基丁酸酯）（P3 / 4HB）结晶的影响

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摘要

Boron nitride (BN), talc, hydroxyapatite (HA),and zinc stearate (ZnSt) were investigated as nucleation agents (NA) for nonfossil-based poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) plastics. Nonisothermal crystallization behaviors of the P3/4HB/NA blends were examined by DSC. It revealed that BN is the most efficient nucleation agent to promote the crystallization rate, however, but not the crystallization degree. The lasting crystallization of P3/4HB was also removed. The nucleation effect was strengthened with increase of BN content up to 1% and then slackened deeply when further BN was added. Isothermal crystallization analysis revealed that the addition of nucleation agent BN does not alter the crystal growth mode of P3/ 4HB, with maintaining the Avrami parameter n value around 2.40. Talc did enhance the crystallization of P3/4HB with however milder crystal growth rate. HA and ZnSt did not promote, but depressed the crystallization of P3/4HB plastics.
机译：研究了氮化硼（BN），滑石粉，羟基磷灰石（HA）和硬脂酸锌（ZnSt）作为非化石基聚（3-羟基丁酸酯-共4-羟基丁酸酯）（P3 / 4HB）塑料的成核剂（NA）。通过DSC检查了P3 / 4HB / NA共混物的非等温结晶行为。结果表明，氮化硼是提高结晶速率最有效的成核剂，但不能提高结晶度。 P3 / 4HB的持久结晶也被除去。随着BN含量增加至1％，成核作用得到增强，然后再添加BN时，其成核作用大大减弱。等温结晶分析表明，成核剂BN的添加不会改变P3 / 4HB的晶体生长模式，并且将Avrami参数n值保持在2.40附近。滑石粉确实增强了P3 / 4HB的结晶，但晶体生长速度较缓。 HA和ZnSt不会促进P3 / 4HB塑料的结晶，但会抑制其结晶。

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