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Advances in Lignin-Based Composites and Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: closed (25 September 2023) | Viewed by 4027

Special Issue Editor


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Guest Editor
College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang, China
Interests: solid waste; biomass-based advanced materials; wastewater treatment

Special Issue Information

Dear Colleagues,

Lignin is the second most abundant natural polymer on Earth, with an annual output of about 150 billion tons, and is considered an inexhaustible source owing to its renewable origin. Additionally, more than 70 million tons of lignin-related wastes are produced every year as a major byproduct of pulp and paper industry. Technology for the utilization of lignin in the preparation of value-added products such as composites and polymers has become an important technological frontier undergoing active development. However, high oxygen content (20%–35%) and complex linkages (β-O-4, β-5, β-1, 5-5, 4-O-5, β-β) make the utilization of lignin difficult. Many new methods and new strategies for the utilization of lignin in reasonable, highly efficient and environment-friendly ways are hence being proposed and developed.

Accordingly, this Special Issue focuses on the advances in the new methods and strategies for the conversion and utilization of lignin in composites and polymers. Other relevant studies are highly welcome as well.

Dr. Zhanghong Wang
Guest Editor

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Keywords

  • lignin-based composites
  • lignin-based polymers
  • lignin-based nanomaterials

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Published Papers (1 paper)

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Review

26 pages, 2906 KiB  
Review
Lignin-Based Admixtures: A Scientometric Analysis and Qualitative Discussion Applied to Cement-Based Composites
by Victor Rezende Carvalho, Laís Cristina Barbosa Costa, Bruno Eduardo Lobo Baeta and Ricardo André Fiorotti Peixoto
Polymers 2023, 15(5), 1254; https://doi.org/10.3390/polym15051254 - 1 Mar 2023
Cited by 6 | Viewed by 3431
Abstract
The development of lignin-based admixtures (LBAs) for cement-based composites is an alternative to valorizing residual lignins generated in biorefineries and pulp and paper mills. Consequently, LBAs have become an emerging research domain in the past decade. This study examined the bibliographic data on [...] Read more.
The development of lignin-based admixtures (LBAs) for cement-based composites is an alternative to valorizing residual lignins generated in biorefineries and pulp and paper mills. Consequently, LBAs have become an emerging research domain in the past decade. This study examined the bibliographic data on LBAs through a scientometric analysis and in-depth qualitative discussion. For this purpose, 161 articles were selected for the scientometric approach. After analyzing the articles’ abstracts, 37 papers on developing new LBAs were selected and critically reviewed. Significant publication sources, frequent keywords, influential scholars, and contributing countries in LBAs research were identified during the science mapping. The LBAs developed so far were classified as plasticizers, superplasticizers, set retarders, grinding aids, and air-entraining admixtures. The qualitative discussion revealed that most studies have focused on developing LBAs using Kraft lignins from pulp and paper mills. Thus, residual lignins from biorefineries need more attention since their valorization is a relevant strategy for emerging economies with high biomass availability. Most studies focused on production processes, chemical characterizations, and primary fresh-state analyses of LBA-containing cement-based composites. However, to better assess the feasibility of using different LBAs and encompass the multidisciplinarity of this subject, it is mandatory that future studies also evaluate hardened-sate properties. This holistic review offers a helpful reference point to early-stage researchers, industry professionals, and funding authorities on the research progress in LBAs. It also contributes to understanding the role of lignin in sustainable construction. Full article
(This article belongs to the Special Issue Advances in Lignin-Based Composites and Polymers)
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