Some of the worst offenders, which can take decades to degrade in landfills, are polypropylene—which is used for things such ...

THE linear relationship found experimentally by Bar-barisi1 between bond strength and (1 + cos θ), where θ is the contact angle for epoxy-polyamide adhesive on polyethylene, is of technological ...

At the University of California, Berkeley, a new chemical process claims to 'essentially vaporize' polyethylene, ...

The size of the atoms and their mass has a lot to do with the density of the substance Another factor is how the atoms are arranged in the substance. Polyethylene is made up only of carbon and ...

Now, researchers at the University of California, Berkeley have come up with a method of recycling these polymers that uses ...

This chemical process employed three different bespoke heavy metal catalysts: one to add a carbon-carbon double bond to the polyethylene polymer and the other two to break the chain at this double ...

引力波探测器使用数公里长的干涉仪来测量时空的微小膨胀和收缩。由于量子力学的原因，这些测量的精度是有限的。理论上，利用光的压缩态可以超越量子极限，而合适的滤光腔可以在更宽的频率范围内扩展这一优势。

Some adhesives and sealants may provide only marginal adhesion to certain substrates. This could be due to the low surface energy of the substrate relative to the adhesive (e.g., epoxy bonding ...

What is the main challenge of bonding polyolefins with adhesives? Polyolefins, such as polyethylene and polypropylene, have historically been difficult to bond using conventional adhesives due to ...

Small molecules - AQA A covalent bond is a shared pair of electrons. Covalent bonding forms molecules. Substances with small molecules have low melting and boiling points, and do not conduct ...

This "dual analog" method, also known as "modem bonding," uses the Multilink PPP protocol and must be supported by the ISP. ISDN modems use channel bonding to split the data stream into two 64 ...

A trauma bond is an emotional attachment that can form in an abusive relationship, specifically the connection the victim feels toward the perpetrator. A trauma bond is characterized by cycles of ...