Ecotoxicity of cationic cellulose polymers to aquatic biota: The influence of charge density

Simões, Anabela M.; Venâncio, Cátia; Alves, Luís; Antunes, Filipe E.; Lopes, Isabel

doi:10.1016/j.scitotenv.2021.150560

Cited by 7 publications

(6 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pH of MBL (and respective stock solution) was around 8 while for H 2 Od and ASTM was 6.8 and 7.6, respectively. That higher pH of the MBL medium might stimulate the formation of intra-molecular bonds and, thus, promoting the contraction of the polymer, leading to smaller sized particles as observed elsewhere with hydroxyethyl cellulose polymers (Simões et al 2022). However, other parameters of the test media (e.g.…”

Section: Discussionmentioning

confidence: 84%

“…However, in the presented work, the HMPAAs showed smaller sized when suspended in MBL medium, comparatively to H 2 Od, ASTM, and FETAX. This may, in part, be the result of the pH of the medium and its differential interaction with the structures of the six variants, as poly(acrylic) acids might be highly sensitive to small variations in this parameter (Nesrinne and Djamel 2017 ; Simões et al 2022 ). The pH of MBL (and respective stock solution) was around 8 while for H 2 Od and ASTM was 6.8 and 7.6, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Against this background, pinpointed by previous studies focusing as well on the ecotoxicity of industrially designed polymers (e.g. Martins et al 2018;Pereira et al 2018;Simões et al 2021Simões et al , 2022, Pereira et al (2018) strongly suggests that the development of sustainable and ecofriendlier polymers will have to be based above all on the sensitivity of the ecological receptors in detriment of polymers physical-chemical characteristics. Notwithstanding, polymers' conformation must also be appraised since toxicity might be dependent on the way that organisms ingest and incorporate materials and the degradation and metabolization of those compounds.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Adding knowledge to the design of safer hydrophobically modified poly(acrylic) acids: an ecotoxicological approach

Tavares

Venâncio

Duarte

et al. 2023

Environ Sci Pollut Res

Self Cite

View full text Add to dashboard Cite

The architecture of hydrophobically modified polymers can be tailored to produce variants with different levels of functionality. This allows industry to apply rational design methods for the development of more environmentally friendly materials. In the present work, the ecotoxicity of six variants of hydrophobically modified poly(acrylic) acids (HMPAA), obtained by changing the crosslinked conformation, insertion position, and length of the hydrophobic groups, was assessed for the (i) bioluminescence production of Aliivibrio fischeri ; (ii) population growth rate of Raphidocelis subcapitata and Chlorella vulgaris ; (iii) mortality of Brachionus calyciflorus ; (iv) feeding inhibition, somatic growth rate, reproduction, and mortality of Daphnia magna ; and (iv) mortality and somatic growth rate of Pelophylax perezi tadpoles. The concentrations causing 50% and 20% of effects (L(E)C 50 and 20 , respectively) ranged from 9.64 up to > 2000 mg·L −1 for all six HMPAA and species. The bacterium A. fischeri and tadpoles of P. perezi were the most sensitive and most tolerant organisms to the six tested HMPAA, respectively. The computed 5% hazard concentrations (computed on the basis of L(E)C 50 s ) showed that HMPAA1 (13.0 mg·L −1 ) and HMPAA2 (26.1 mg·L −1 ) were the most toxic variants, while HMPAA6 (233 mg·L −1 ) the least one. These results suggest HMPAA6 (with low crosslink percentage modified by the addition of long and short hydrophobic groups at the surface) to be the most environmentally friendly variant and should be preferentially considered to be used in consumer products, compared to the other five studied variants. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-022-24963-w.

show abstract

Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Adding knowledge to the design of safer hydrophobically modified poly(acrylic) acids: an ecotoxicological approach

Tavares

Venâncio

Duarte

et al. 2023

Environ Sci Pollut Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hydroxyethyl cellulose (HEC) and cellulose acetate (CA) are important derivatives of cellulose. Owing to the high chemical stability, excellent solubility and the ability to form gel in water, it is widely used in personal care products (PCPs) and membrane [16,17]. Nevertheless, due to its high ionic strength and viscosity, which make it possible to have ecotoxity beyond the allowed criteria.…”

Section: Applicationmentioning

confidence: 99%

“…Nevertheless, due to its high ionic strength and viscosity, which make it possible to have ecotoxity beyond the allowed criteria. The ecotoxity of products of cellulose polymers deserve high attention even though it is a renewable polymer [16].…”

Section: Applicationmentioning

confidence: 99%

Renewable polymers to help human sustainable development under the current situation of fossil resource depletion

Dong

2023

Eighth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2022)

View full text Add to dashboard Cite

Fossil energy has been continuously consumed with the development of industry in recent years. As is known to all, the fuels are not only the products of fossil energy, but also additional products other than fuels, such as plastics, lubricants, asphalt, etc. However, the substitution of additional products is still in the early stage of development. This paper lists three typical renewable materials and further discusses their process from extraction to application. In this paper, we will discuss the calcium lactate crystallization acidolysis extraction method, direct polycondensation method and lactide ring opening polymerization method of PLA, its processing methods, such as injection molding, extrusion molding, etc., and its application fields, such as health and medicine, agriculture, industry, textile industry, etc.; Hot water bath extraction of cellulose and its applications, such as CNF, CNC, PCP, etc.; compression extraction of polyurethane, acid oxidation and epoxidation synthesis of unsaturated vegetable oil, and their applications, such as electronic devices, adhesives, etc. In the future, more researchers will pay attention to this field, and more similar materials will replace fossil products to achieve the ecological balance of the earth. The research significance of this paper is to help beginners of materials science to preliminarily understand some popular renewable materials today, summarizing their possible development direction and put forward the use scheme in the future.

show abstract

Environmental hazard of cationic polymers relevant in personal and consumer care products: A critical review

Connors

Arndt

Rawlings

et al. 2022

Integr Envir Assess & Manag

View full text Add to dashboard Cite

Historically, polymers have been excluded from registration and evaluation under the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) program, the European chemical management program. Recently, interest has increased to include polymers. A tiered registration system has been envisioned and would begin with classes of polymers of greater interest based on certain properties. Cationic polymers are one such class. There is a pressing need to understand the quality and limitations of historical cationic polymer studies and to identify key sources of uncertainty in environmental hazard assessments so we can move toward scientifically robust analyses. To that end, we performed a critical review of the existing cationic polymer environmental effects literature to evaluate polymer characterization and test methodologies to understand how these parameters may affect test interpretation. The relationship between physicochemical parameters, acute and chronic toxicity, and relative trophic level sensitivity were explored. To advance our understanding of the environmental hazard and subsequent risk characterization of cationic polymers, there is a clear need for a consistent testing approach as many polymers are characterized as difficult-to-test substances. Experimental parameters such as dissolved organic carbon and solution renewal approaches can alter cationic polymer bioavailability and toxicity. It is recommended that OECD TG 23 "Aqueous-Phase Aquatic Toxicity Testing of Difficult Test Substances" testing considerations be applied when conducting environmental toxicity assays with cationic polymers.

show abstract

Ecotoxicity of cationic cellulose polymers to aquatic biota: The influence of charge density

Cited by 7 publications

References 39 publications

Adding knowledge to the design of safer hydrophobically modified poly(acrylic) acids: an ecotoxicological approach

Adding knowledge to the design of safer hydrophobically modified poly(acrylic) acids: an ecotoxicological approach

Renewable polymers to help human sustainable development under the current situation of fossil resource depletion

Environmental hazard of cationic polymers relevant in personal and consumer care products: A critical review

Contact Info

Product

Resources

About