Page 166 - CW E-Magazine (24-12-2024)

Special Report

Efficient CoCu/SiO catalyst catechol-rich lignin and tannins – were like vinyl esters, ethers and lactams via
2
derived from Co(Cu) selected for investigations. A higher free radical polymerisation was carried
silicate for aqueous phase pyrolysis temperature is favourable with out. Improvements have been made in
hydrogenation of furfural (F) respect to specific surface area and long- photo-flow chemistry conditions. Many
to cyclopentanone (CP) term cyclic stability. (ChemSusChem., examples are given. (Green Chem.,
2024; DOI: 10.1002/cssc.202301005). 2024; DOI: 10.1039/D4GC03466).
J. Zhang et al have optimised the content
of bimetallic components, highly active Waterborne polymers and Green synthesis of insecticidal,
Co-doped Co Cu bimetallic silicate coatings from bio-based bactericidal, UV absorbent,
1
3
for the title reaction. The conversion of butanolides (B) sustainable paint formulations
F was 95% and selectivity of CP was [Coating industry did start with renew- using Mentha Piperita (MP)
88.6%. (Chem. Eng. Technol., 2024; able raw materials like linseed oil, rosin, (peppermint)
DOI: 10.1002/ceat.202300265). shellac, terpenes, etc. but cheaper and
better petrochemicals did take over but H. Majeed et al have worked on deve-
The effect of the pyrolysis there is a revival of interest in using loping a natural insect-repellent paint
temperature and biomass renewable raw materials.] formulation from plant-based materials
type on the biocarbon with UV absorption and antibacterial
characteristics A. Jensma et al have worked on the properties. MP was used and water ex-
synthesis of B co-polymer, which may tract and zinc nano particles were taken
A. Lurchenkova et al have referred to well replace acrylates (though these can (size less than 100 nm). Mentha nanopar-
the title subject to give carbon-based also come from renewable raw materi- ticles were added to paint formulations
materials for applications such as cata- als). In the proposed process furfural (plastic emulsion water based) to get UV
lysts and energy related materials. is first covered to hydroxy B using an absorbent, bacteriostatic and mosquito
Precursor nature and characteristics are environmentally benign photo-chemical repellent coating solutions. Anti-mosqui-
complex, which affect end properties. reaction with singlet oxygen. Hydroxy to activity was assessed, apart from UV
The obtained carbon has application as B is then condensed with bio-based resistance. (Reaction Chem. Eng., 2024;
negative electrode materials in Li-ion alcohols leading to a wide variety of DOI: 10.1039/D4RE00221K).
batteries. Three biomasses – lignocellu- alkoxy B monomers. Subsequently,
losic spent grain form a local brewery, co-polymerisation with vinyl monomers
Facile synthesis of a novel
furanic monomer and its
ADMET polymerisation
toward fully renewal
functional polymers
M. Kamran et al have reported cross-
aldol condensation of 2,5-diformylfuran
(DFF) and 10-undecenal (UA) (obtained
from cracking of castor oil, along with
n-heptaldehyde) under mild base-cata-
lysed condition resulting in the desired
product in good yields. Further, acyclic
diene metathesis (ADMET) polymeri-
sation using Grubb’s catalyst of second
generation was carried out. The Tg is in
the range of -16°C to 5°C. The product
has high thermal stability, good hydro-
phobicity, and photoactive properties.
This is a novel versatile material based
on 100% bio-based resources. (ACS
Sustainable Chem. Eng., 2024; DOI:
10.1021/acssuschemeng.4C03498).

166 Chemical Weekly December 24, 2024

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