INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Haibo Huang,Long Mao,Wei Wang,Zhihan Li,Chengrong Qin
As a traditionally used packaging material, natural cellulose-based paper has poor barrier properties to water and oxygen, which severely limits its wide application in food packaging. In this study, we report a new sustainable approach to producing hydrophobic, high-barrier, and antibacterial packaging materials from cellulose paper. In this process, commercially available microcrystalline cellulose was first modified by long-chain stearic acid to form hydrophobic microcrystalline cellulose ester and then mixed with stearic acid as filler in the subsequent surface coating of bagasse fibre paper. The microcrystalline cellulose ester/stearic acid-coated paper (MSP) exhibited good water repellency and oxygen barrier activity due to a continuous hydrophobic film that formed, which completely covered the pores of the original bagasse fibre paper. The coated MSP sample also showed excellent dimensional stability in water and a good wet tensile strength of 16 MPa. In addition, poly(hexamethylene guanidine) (PHMG) was chemically grafted onto the free carboxyl groups of the MSP surface layer, and the resulting MSP- g -PHMG samples exhibited excellent antibacterial activity against Escherichia coli and Listeria monocytogenes . The biodegradable cellulose-based MSP- g -PHMG sample significantly delayed the decay of raspberry during storage, indicating its potential application in food packaging.
研究领域:
材料科学
·
食品科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Manyuan Yin,Xiaoqin Zhang,Hao Wang,Zicheng Yuan,Hongxia Deng,Xianliang Jiang,Han Hu,Jin Zhu,Jinggang Wang
Finding a balance between thermo-mechanical properties and degradation properties is important for degradable polyesters to dissolve, addressing environmental problems. In this work, spiroglycol, an acetal monomer with symmetrical rigid spirocycles which can effectively increase the glass transition temperature (Tg) of polymers and easily hydrolyze in acidic environments, was introduced into poly(ethylene succinate) (PES) to synthesize poly(ethylene succinate-co-spirocyclic succinate) (PESS) copolyesters with contents ranging from 10 to 80 mol % spiroglycol units via melt polycondensation. As the spiroglycol unit content increases, the Tg, thermal resistance, and mechanical and barrier properties of the PESS copolyesters were obviously improved. Specifically, the glass transition temperature of PESS50 was enhanced up to 33.2 °C and it had a tensile modulus of 1398 MPa and tensile strength of 20.2 MPa, with an elongation at break of 333.4%. In addition, the barrier properties of PESS50 are significantly higher compared to PBAT and can achieve the purpose of food freshness preservation. The acidic cleavage of the spiroglycol unit can be accomplished in an acidic environment, while the ester bond can be hydrolyzed in an enzyme environment, achieving the goal of controlled degradation. As a result, while ensuring a certain degree of degradation performance, the thermo-mechanical properties have been improved.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Manyuan Yin,Zhicheng Guo,Zicheng Yuan,Han Hu,Jin Zhu,Jinggang Wang
The bio-based high gas barrier polyesters play an important role in the food packaging field. In this study, a new bio-based polyester poly(pentamethylene 2,5-thiophene dicarboxylate) (PPeTh) was synthesized by melting polycondensation from thiophene-2,5-dicarboxylic acid and pentanediol and systematically compared with the properties of counterpart polyesters derived from both petroleum-based poly(pentamethylene terephthalate) (PPeT), poly(pentamethylene isophthalates) (PPeI) and bio-based poly(pentamethylene 2,5-furoate) (PPeF). The results indicated that PPeTh, PPeF, PPeT, and PPeI all exhibited excellent thermal stability. PPeTh showed a higher tensile strength and elongation at break compared to PPeT (σ b : 22.5 MPa, ε b : 975 %), and it also surpasses PPeF in terms of elastic modulus, yield strength, and elongation at break (E: 455 MPa, σ y : 17.6 MPa, ε b : 975 %). Furthermore, PPeTh exhibited superior gas barrier properties (BIFp(CO 2 ):67.05, BIFp(O 2 ): 16.89) and demonstrates potential biodegradability in the presence of CALB enzyme and composting conditions. A series of results suggested that the bio-based polyester PPeTh possesses the best overall performance, outperforming PPeF and exceeding that of petroleum-based polyesters PPeT and PPeI, indicating its potential application value.
研究领域:
材料科学
·
环境科学
·
食品包装工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Nankai Song,Xuan Zhang,Yang Si,Jianyong Yu,Bin Ding
As the last line of protection for humans, chemical protective suits provided safe and effective protection where chemical warfare agents (CWAs) or chemical reagents leaked; however, the existing chemical protective clothing had poor wearing pressure comfort due to the limitation of inherent materials. Herein, we reported a scalable strategy to fabricate chemical protective fabric (CPF) with a biomimetic extracellular matrix (ECM) barrier layer composed of an elastic fiber framework based on the cross-linked nanofiber membrane and the styrene–butadiene–styrene block copolymer (SBS)/acticarbon matrix. The construction of the reliable and strategical biomimetic ECM structure succeeded in fulfilling hazardous chemical barrier properties, recoverable deformation, and thermal comfort improvement. The resulting CPF exhibited waterproofness with exceeding 200 kPa hydrostatic pressure and exceptional WVT of 550.96 g m–2 d–1, rapid elastic recovery from a strain of 80%, high-cycle fatigue resistance, superior barrier performance against toxic chemicals, and keeping CEES resistance after 100 tensile loading cycles. The successful preparation of the fascinating biomimetic nanofibrous membrane may provide a particular research foundation for developing chemical protective clothing in the future.
研究领域:
材料科学
·
生物医学工程
·
化学防护领域
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Qianqian Tang,Chen Chen,Mengying Li,Xiaoyang Yue,Xiuwu Liu,Hao Li
In this work, the covalent crosslinked polyvinyl alcohol (CPVA) was blended with montmorillonite (MMT) adsorbing quaternary ammonium lignin (QAL) in an exfoliated state (QAL-MMT) to prepare high barrier biodegradable composite films (QMCPVA) with good performance. Specifically, QAL, QAL-MMT, CPVA and QMCPVA composite films were firstly prepared and characterized by FTIR, XRD and SEM, etc. QAL-MMT existed in an exfoliated state within CPVA and a cross-linking network structure was formed between the two, but the lamellar structure of QAL-MMT also restricted the transfer of CPVA chains. Therefore, when the QAL-MMT additive amount was 12 %, the tensile strength of QMCPVA films can reach 59.9 MPa and the corresponding elongation at break was 82 %. Because the formation of ordered nanolayer structure can effectively hinder the diffusion of water and oxygen molecules, the water vapor transmission rate and oxygen permeability of QMCPVA composite films decreased to 49 g/m2·d and 2.2 × 10–5 cm3/m2·d·Pa, respectively. Moreover, the addition of QAL-MMT can also endow the QMCPVA films with additional antioxidant and ultraviolet shielding properties. This work would broaden the high value-added application of lignin into food and pharmaceutical packaging material field, having a great economic and environmental benefit. Synopsis A high barrier biodegradable QMCPVA composite film with a brick-wall structure was prepared by blending the crosslinked PVA (as a polymer film matrix) and QAL-MMT (as fillers).
研究领域:
材料科学
·
高分子科学
·
纳米技术
·
环境科学
·
食品包装技术
·
制药工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 8
·e70445
·
IF 3.4
Jiahui Du,Yifeng Wu,Jiushi Guo,Jie Cao,Tao Sun,Tungalag Dong,Yuming Deng,Xing Wang,Xueyan Yun
The quality of yogurt deteriorates during storage due to exposure to oxygen and UV light, and high-barrier packaging effectively mitigates this issue. Concurrently, there is increasing interest in replacing petroleum-based packaging with eco-friendly alternatives. In this study, poly(lactic acid-butylene itaconate) (PLBI), developed as a modified version of poly (L-lactic acid) (PLLA) to enhance toughness, was combined with poly (vinyl alcohol) grafted with acryloyl chloride (PVA-g-AC) through UV curing. The resulting PLBI/PVA-g-AC films exhibited significantly improved barrier properties. They were used to package stirred yogurt alongside polyethylene/nylon (PE/NY) films for comparison. Quality assessments, including acidity, water-holding capacity, and viable bacterial counts, demonstrated that PLBI/PVA-g-AC films provided superior preservation. Metabolomics analysis revealed increased flavor compounds, such as acids and alcohols, and decreased sugar levels in these packaged yogurt. This work expands potential applications of PLLA-based materials in food packaging and offers insights into the influence of oxygen on yogurt storage quality.
研究领域:
食品包装
·
高分子科学
·
食品科学
·
材料科学
·
可降解材料
·
乳品技术
·
代谢组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Xin Jing,Xia Li,Yifei Jiang,Jiang Lou,Zhuqing Liu,Qijun Ding,Wenjia Han
Degradable bio-based materials have been widely considered as functional coatings, however, it is a great challenge to fabricate biodegradable coatings with high barrier, water- and oil- resistance. In this work, such coatings were fabricated by using collagen fibers (CF), sodium alginate (SA), and polyvinyl butyral (PVB). CF and SA were mixed evenly and coated on Ca 2+ pretreated filter paper. It was mainly due to the electrostatic adsorption between collagen fibers and sodium alginate , and the crosslinking between the adsorption products and Ca 2+ . By coating PVB solution, the barrier performance was further improved. Notably, the composite exhibited excellent water vapor resistance (48 g/m 2 ·24 h), water resistance (31 g/m 2 ), oil resistance (kit rating: 12/12) and good mechanical properties. This degradable, environmentally friendly, and simple composite paper method has excellent barrier properties, mechanical properties and fluorine-free properties, and will have many applications in the food and packaging fields.
研究领域:
材料科学
·
环境科学
·
化学工程
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）