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#polymers

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In 2018, estimated 356,238 deaths globally were attributed 2 #DEHP #plastic #polymers and their #chemical additive exposure representing 13.497% of all #cardiovascular deaths among individuals aged 55–64. Of these, 349,113 were attributed 2 use of plastics. Geographic disparities - Middle East, South Asia, East Asia, and Pacific accounted for the largest shares of DEHP-attributable CVD deaths (73.163%). Globally, DEHP resulted in 10.473 million YLL. thelancet.com/journals/ebiom/a #plastics #pollution

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@ScienceScholar

#Recycle #Plastics #Polymers

This may be very useful :
""it is now possible to prepare
* high molecular weight polymers * (molecular weight > 50000), to control the stereo-structure (tacticity) of the C-C main chain, and to quantitatively incorporate a functional group at one end of the polymer chain.""

Sure cool and all, (I guess) Buuuut ...

"""...success was made in preparing C1 polymers with enhanced acidity and much higher melting points, up to 130 °C, compared to their vinyl polymer counterparts with the same substituents.

Also, it was found that the *C1 polymers can be effectively degraded into low molecular weight compounds under mildly basic conditions*, which is very important considering their potential as environmentally friendly polymeric materials."""

So *possibly* Readily Recyclable and a "nicer" PVC ???

An interesting paper about Y-shaped polymer brushes. End-grafted, one arm is hydrophobic and the other is hydrophilic. Depending on solvent exposure history, the microscopic configuration of the arms are different, resulting in different macroscopic wetting.
#Polymers #SurfaceScience

Solvent-Induced Self-Assembly of Mixed Poly(methyl methacrylate)/Polystyrene Brushes on Planar Silica Substrates:  Molecular Weight Effect | Journal of the American Chemical Society
pubs.acs.org/doi/10.1021/ja049