PHA材料介绍

Introduction of PHA materials


•PHA是聚羟基脂肪酸酯类材料的总称,一般使用母液糖、淀粉水解液作为发酵原材料。

•PHA is a general designation of  polyhydroxyalkanoates materials, the general use of liquid sugar, starch hydrolysate  as raw materials. 


•从1925年发现PHA至今,人们已发现有300余种微生物可通过发酵产生PHA,并可通过现代生物技术获得高产菌株。 

•Since PHA was first discovered in 19025, over 300 kinds of microorganisms have been identified which can be used to produce PHA. In addition, modern bio-technology can be utilized to obtain high-yield strains. 


•其制品用完废弃后无需回收、无需堆肥,直接置于土壤、污水、河水、海水中,经3~6个月可被微生物分解成CO2和H2O。

•In soil, sewage, river and sea, the object made from PHA degrades to CO2 and water after 3-6 months by environmental microorganisms



PHA材料性能

Properties of PHA materials





 •PHA是高度结晶的晶体,结晶度的范围在55-80%,其在物理性质甚至分子结构上与聚丙烯(PP)很相似,例如熔点、玻璃态温度、结晶度、抗张强度等,而比重大、透氧率低和抗紫外线照射以及具有光学活性、阻湿性等则是PHA的优点。

•The crystallinity of PHA is in the range  55 - 80%, the physical properties is similar with polypropylene (PP) , such as melting point, glass transition temperature, crystallinity, tensile strength. It has the advantages of low ratio of oxygen, low oxygen permeation rate, anti ultraviolet radiation, optical activity and moisture resistance.



机械性能

Mechanical properties







热力学性能

Thermodynamic properties







PHA具有广阔的应用领域
 
Wide application of PHA


均聚物,共聚物,三元共聚物,嵌段共聚物

homopolymers, copolymers, terpolymers, blocks

 •可通过调节共聚比例获得具有不同刚性、结晶性、熔点和玻璃化温度的适合不同用途的聚合物材料;

Obtained versatile range of structures with broad range of physical properties by adjusting polymerization ratios.


•研究表明至少可替代50%以上的塑料用途;
• PHA could substitute 50% plastic 


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