Methyl Methacrylate (MMA)-Grafted Polypropylene (PP) Separator for Rechargeable Lithium Metal Battery

Synthesis of ethylene and butyl methacrylate‐based copolymer by emulsion polymerization

“…Ju et al . assigned the absorption band at around 721 cm −1 as the rocking vibration of CH 2 CH 2  group which increases with the increase of methylene group in the polymer chain . In the present study, with increase in the ethylene feed pressure from 2 bar to 15 bar, the aforementioned rocking vibration of CH 2 CH 2  group at 721 cm −1 also increases in the same trend, that is, A‐4 > A‐2 > A‐1.…”

“…Figure shows the 1 H NMR spectra of poly(ethylene‐ co ‐BMA) copolymer at different ethylene feed pressure with series of characteristic resonance in the region 0.8–3.9 ppm. The peak intensity of the CH 2 CH 2  proton at around 1.2 ppm increases with the increase of ethylene feed pressure and it clearly indicates the incremental increase of ethylene in the BMA chain . The appearance of characteristic signal of methoxy (–OCH 3 ) protons of the BMA at δ = 3.9 ppm also confirms the presence of BMA group in the poly(ethylene‐ co ‐BMA) copolymer.…”

Preparation of 4A zeolite coated polypropylene membrane for lithium‐ion batteries separator

“…There are several ways to overcome these limitations of polyolefin membrane separators; for instance, their surface modification by chemical grafting, E‐beam treatment, or plasma treatments . Another modification method of the polyolefin separators is to coat them with inorganic and/or organic particles .…”

Enhanced wetting properties of a polypropylene separator for a lithium-ion battery by hyperthermal hydrogen induced cross-linking of poly(ethylene oxide)

“…16 To overcome this problem, various surface modication processes have been tried to improve the wetting characteristic of polyolen separators. In particular, much effort has been made to increase the surface polarity of polyolen separators by either physical coating 17 or wet chemical modication 18 with organic molecules bearing specic polar groups such as poly-(ethylene oxide) (PEO), methyl methacrylate, and acrylic acid onto the separator surface. Physical coating techniques are usually simple and low cost processes, and can maintain the original mechanical strength of the polyolen separator.…”