Page 170 - CW E-Magazine (26-3-2024)

Special Report

molecules, reinforce composites, act highly sustainable method of polymer valorisation to give fi ne chemicals are
as antioxidant, and endow antimicro- synthesis. Mn of 235,500 g/mol; D=2.4, covered. (Green Chem., 2024; DOI:
bial effects. This review covers recent having excellent thermal stabilities 10.1039/D3GC03439A).
advances in L-based composites, with has been reported. This strategy looks
particular emphasis on innovative promising. (ChemSusChem., 2023; DOI: Advancements and perspectives
methods for modifying L into micro- 10.1002/cssc.202301165). toward L valorisation via O-
and nano-structures and evaluating demethylation (ODM)
their functional contribution. L-based The green manufacturing of
composites can be tailored to have supe- thermoplastic starch (TPS) for The ODM of L will make it far more
rior physico-mechanical characteristics, low carbon and sustainable useful feedstock to make a variety of
biodegradability; eco-friendly adhesives energy applications products. X. Wu et al have reviewed
and advanced barrier technologies are this subject and potential applications
additional properties. (Green Chem., W.Si and S. Zhang have reviewed the of ODM are discussed. Future outlook is
2023; DOI: 10.1039/D3GC03154C). title subject in view of many application covered. (Angew. Chem. Intl. Ed.; DOI:
of TPS in food packaging, water-borne 10.1002/anie.202317257).
Strategies for selective synthesis coatings, gas barriers, and energy
of biomass-based 1,13-tridecane- storage and generation. TPS manu- Bio-based platform chemicals
diol (TDO) from furfural (F) facture requires appropriate solvents synthesised from L biorefi nery
for granule disruption, which contri-
K. Yuan et al have carried out aldol con- bute to the dissociation of the double R. Hu et al have referred to numerous
densation of F to build C intermediates, helical structure of starch granules. efforts that have been made for the
13
followed by hydrodeoxygenation. Raney Thermodynamic and kinetic aspects valorisation of NPS. Extraction of L,
Ni gave excellent catalytic performance of TPS green manufacturing process separation, depolymerisation and pro-
for the initial hydrogenation of C=C are covered. Green solvents and green duct separation are covered. This review
and C=O with a yield of 98.3%; Pd/ polymers to make TPS-based materials provides from an in-depth mechanism of
TiO – ZrO gave promising de-OH are covered. The next generation TPS, understanding subprocesses. This review
2
2
and ring opening performance. Thus multi-functional starch organic gel, and covers: elucidation of the L biosynthesis
1,3-tridecandediol can be made in good its fabrication strategies are covered. pathway; dissection of the mechanism of
yields. (ACS Sustainable Chem. Eng., (GreenChem, 2024; DOI: 10.1039/ biorefi nery subprocesses with intelligi-
2023; DOI: 10.1021. acssuschemeng. D3GC03671E). ble graphical overviews and summary;
3C05865). analysis of tech-economic viability from
Recent advances in catalytic the view of market potential and each
Polymers from cellulosic waste: conversion of L to value-added biorefinery subprocess. More effort
Direct polymerisation of levo- chemicals using ionic liquids for gene engineering regulation and
glucosenon (LGO) using DBU (ILs) and deep eutectic solvents integration implementation are required.
(Green Chem., 2023; DOI: 10.10391/
as a catalyst (DES) D3GC02927A).

B.L. Pollard et al have referred to the K. Sing et al have covered this subject Biotransformation of L into
production of LGO at multi-tonne scale and title greener solvents are discussed. 4-vinylphenol derivatives (VPs)
by the pyrolysis of cellulosic waste. The title solvents may well give a new
These authors have reported the direct, product line. Several studies have been R-Y. Liu et al have worked on the
one-step, and operationally simple carried out on L solubility and extraction title subject and have referred to the
polymerisation of LGO that provides a using title solvents. Advances in L exploration of key enzymes and the
construction of effective microbial cell
factories, which have facilitated the
assimilation of L derivatives and result-
ed in improved yield of VPs. Further
advances in biotransformation are referred.
(Green Chem., 2024; DOI: 10.1039/D3G-
C03763K).

170 Chemical Weekly March 26, 2024

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