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Nucleated poly-3-hydroxybutyric acid fiber for use in non-wovens, e.g. for medical implants, made from a mixture of high- and low-molecular wt. poly-acid and crystallised in the alpha and beta modification
Nucleated poly-3-hydroxybutyric acid fiber for use in non-wovens, e.g. for medical implants, made from a mixture of high- and low-molecular wt. poly-acid and crystallised in the alpha and beta modification
Nucleated poly-3-hydroxybutyric acid (PHB) fibers (I) comprising a mixture of 0.1-10.0 wt.% bacterially-produced (bp-PHB) with a wt.-average molecular wt. (M w) of up to 8000 g/mol (II) and 99.9-90.0 wt.% bp-PHB with an M wof at least 100000 g/mol (III), in which the fibers are crystallised essentially entirely in the alpha - and beta -modification. An independent claim is included for a method for the production of (I) by subjecting bp-PHB to electron beam radiation (EBR) with a dose of 200-1500 kGy or gamma radiation with a dose of 600-4500 kGy, adding x = 0.1-10.0 wt.% of this irradiated PHB to (100 - x) wt.% unirradiated bp-PHB and then making fibers from the mixture, using a high stretch ratio (at least 1:4) during fiber production.
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机译：核聚3-羟基丁酸（PHB）纤维（I），包含0.1-10.0 wt。％细菌产生的（bp-PHB）和wt。平均分子量的混合物。 （M w）高达8000 g / mol（II）和99.9-90.0 wt。％bp-PHB，M w至少为100000 g / mol（III），其中纤维基本上完全在α-中结晶和beta修改。包括一个独立的权利要求的生产方法（I），方法是使bp-PHB经受200-1500 kGy剂量的电子束辐射（EBR）或600-4500 kGy剂量的γ辐射，将该辐照过的PHB的0.1-10.0 wt。％转换为未辐照的bp-PHB（100-x）wt。％，然后在纤维生产过程中使用高拉伸比（至少为1：4）从混合物中制备纤维。
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