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    Bio-Based Specialties

    淀粉三元共混薄膜料(PLA/PBAT/淀粉)

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    关于此产品

    本品为三组分粒料改性料:PLA,一种以植物糖为原料制得的脂肪族聚酯;PBAT,一种柔性脂肪族—芳香族共聚酯;以及淀粉,一种来自农作物的碳水化合物。三者经熔融共混后以粒料形式供应,用于薄膜挤出。整个体系均可生物降解,而不仅是其中的淀粉组分。

    在 PLA 与 PBAT 体系中加入淀粉作为第三组分,为采购方带来两点实际价值:提高成品薄膜的生物基比例,并降低每公斤成本,因为淀粉远比它所替代的两种聚酯便宜。之所以存在 PLA 与 PBAT 的二元体系,是因为两者性能互补:PLA 刚硬、强度高但发脆,PBAT 韧性好、延展性强但偏软,共混后得到的薄膜既不脆也不软塌。淀粉在其中并不承担这两种角色。它是连续聚酯相中的刚性极性颗粒,界面上载荷传递不良,其羟基还会吸水。这一取舍是实实在在的:三元共混料的力学性能低于二元体系,对水分也更敏感,因此适合规格尚有余量的通用型薄膜,而不适合对撕裂强度或阻隔性要求严苛的应用。本品以原料形式供应,供买方在自有产线上加工;我们不生产成品。

    主要用于生物基薄膜、可再生含量替代、通用包装膜和可生物降解聚合物体系。

    Bio Green Oleo 按共混比例、淀粉含量、粒料形态和目标膜厚等规格供应该淀粉三元共混薄膜料。

    规格

    ChemistryPLA, PBAT and starch ternary blend
    PositioningHigher renewable content, lower cost
    Trade-offLower mechanical performance than two-component blends
    FormPellet compound
    End of lifeBiodegradable

    应用

    Bio-based filmRenewable content substitutionGeneral purpose packaging filmBiodegradable polymer systems

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    • End use and required material or feedstock
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    Grade, origin and certification are confirmed for each proposed source. A vegetable-derived feedstock is not automatically certified sustainable, pharmaceutical grade or suitable for every application; request the evidence needed for your intended use.

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