塑料瓶的回收率大大提高了
20世纪90年代,废弃的塑料瓶随处可见。后来,随着世界各地对废旧塑料瓶回收技术的不断改进,包括粉碎和清洗。塑料瓶回收大军应运而生,塑料瓶的回收率得到了很大的提高。
目前,一些发达地区的PET废塑料瓶的回收率已经非常高,甚至行业之间为了争夺回收塑料瓶资源而相互抬高价格。全球的废塑料瓶资源变得越来越紧张,开始影响相关的纺织、包装等行业。
事实上,我们认为废塑料瓶回收,相关企业不应只关注发达地区。
In some developing countries, such as Latin America, Southeast Asia, Africa, etc., their recycling technology for waste plastic bottles is still very low. As a result, the recycling awareness of discarded plastic bottles in these countries is generally low and there are a large number of available resources.
If you can actively enter these markets, on the one hand, recycling plastic bottles will solve the local environmental problems will be supported by the government, on the other hand, the cost of obtaining waste plastic bottles will be relatively low. There is still a chance to recycle plastic bottles in these places.

对于跨国塑料瓶的回收,关键问题和运输成本,如果能够很好地控制,我相信前景是无限的。
塑料瓶的回收率大大提高了
废弃塑料瓶可以转化为高效的抗真菌药物。这项研究由IBM纳米医学研究人员和新加坡生物工程与纳米技术研究所进行。研究人员将回收的塑料瓶转化为无毒、生物相容性强的高效抗真菌纳米纤维,能够治疗耐药性真菌感染和细菌感染,如耐甲氧西林金黄色葡萄球菌(MRSA)。
According to reports, more than 1 billion people worldwide are infected with fungi every year, ranging from local skin infections (such as athlete’s foot) to life-threatening fungal blood infections. When the patient is treated with antibiotics, the immune system is damaged.
There is an urgent need to develop highly effective and disease-specific antifungal agents to alleviate the growing problem of drug resistance. Traditional antifungal treatments require intracellular invasion of infection, but it is difficult to target and penetrate the fungal membrane wall.
此外,由于真菌代谢与哺乳动物细胞相似,现有药物无法区分健康细胞和感染细胞。
基于此
研究人员使用有机催化过程促进普通塑料材料(聚对苯二甲酸乙二醇酯,PET)的转化,在此过程中生产新的抗真菌剂分子。
这些新的抗真菌剂是通过氢键结合的方法自组装而成,例如分子魔术贴相互结合,以聚合物的方式形成纳米纤维,从而表现出活跃的抗真菌效果。这种新的纳米纤维带有正电荷,可以仅基于静电相互作用选择性地靶向并附着于带负电荷的真菌膜上。然后,它通过分解和破坏真菌细胞膜的壁来防止其攻击。
研究人员还通过计算机模拟预测,修改这种新型纳米纤维的结构可以产生所需的治疗效果。结果还表明,这种抗真菌纳米纤维在一次治疗后可以有效地分散真菌生物膜,而不会损害周围健康细胞。