生物可降解聚合物，生物可降解, 抗伽马辐射, 医疗/护理用品

Goodfellow PHB Biopolymer (PHB)

生物可降解聚合物

Goodfellow Corporation

Technical Data

 

产品说明

PHB and its copolymers with polyhydroxyvalerate (PHV) are melt-processable semi-crystalline thermoplastics made by biological fermentation from renewable carbohydrate feedstocks. They have been described as "the first example of a true thermoplastic from biotechnology" and are also biodegradeable. Although quite stable under everyday conditions they degrade slowly in the body and when composted or in landfill sites. [The HB monomer unit is a normal constituent of human blood.]

 

Their chemical resistance is somewhat limited as they are attacked by acids and alkalis and dissolve in chlorinated solvents. Rather remarkably, they are optically active polymers with a chiral site in each molecular repeat unit, all of which are in the D- (or R) configuration.

 

PHB homopolymer is a stiff and rather brittle polymer of high crystallinity, whose mechanical properties are not unlike those of polystyrene, though it is less brittle and more temperature resistant. Hence, copolymers are preferred for general purposes. It is believed that the most likely area for the application of homopolymer is in the medical/biological fields.

 

Chemical Resistance:

Acids - dilute Fair

Alcohols - Fair

Alkalis - Poor

Greases and Oils - Good

Resistance to Ultra-violet - Fair

总览

材料状态 • 已商用：当前有效

资料 1 • Technical Datasheet (English)

供货地区 • 北美洲 • 欧洲

• 半结晶 • 可更新资源 • 耐油脂性能

特性 • 均聚物 • 耐热性，中等

• 抗伽马辐射 • 耐油性能

用途 • 医疗/护理用品

形式 • 棒材 • 结构 • 片材

• 薄膜 • 颗粒

加工方法 • 注射成型

 

物理性能 额定值单位制

密度 1.25g/cm³

机械性能 额定值单位制

拉伸模量 3500MPa

抗张强度 (屈服) 40.0MPa

冲击性能 额定值单位制

悬壁梁缺口冲击强度 35 到 60J/m

热性能 额定值单位制

连续使用温度 95.0°C

电气性能 额定值单位制

体积电阻率 1.0E+16ohms·cm

介电强度 (1e6) 0.12kV/mm

 

 

 

 

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