Preparation of uniformly dispersed N-isopropylacryl-amide/acrylic acid/nanosilver composite hydrogel and its anti-mold properties

Peng, Rui; Yu, Hailiang; Du, Chungui; Zhang, Jingjing; Hu, Ailian; Li, Qi; Hua, Yating; Liu, Hongzhi; Chu, Shimin

doi:10.15376/biores.16.1.441-454

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…Nanometal particles, such as nano-silver and nano-copper, inhibit microbial growth mainly by contacting microbial cells and destroying their intracellular structure. Research shows that wood and bamboo impregnated with nano-silver and nano-copper effectively inhibited mold growth [ 16 , 17 , 18 , 19 , 20 ]. Nano-zinc oxide and nano-titanium dioxide, possessing photocatalytic effects under conditions of ultraviolet light irradiation and oxygen, could produce reactive oxygen species to kill microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Leachability and Anti-Mold Efficiency of Nanosilver on Poplar Wood Surface

Dai

Luo

et al. 2022

Polymers

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Water-based antimicrobial agents, used in environmentally friendly applications, are widely used in wood protection industries. Furthermore, nanomaterials as antimicrobial agents, because of their biocidal component, huge specific surface area, and unique nanoscale effect, have attracted attention in the field of biodurability. We employed aqueous dispersed nano-silver with a diameter of 10 nm~20 nm to treat poplar wood and evaluated its leaching resistance and anti-mold effect on the wood surface. The results revealed that the higher the retention of the nano-silver, the stronger the protection efficiency of the wood surface against three molds (Aspergillus niger V. Tiegh, Penicillium citrinum Thom, and Trichoderma viride Pers. ex Fr); and the leachability of the nano-silver presented a slowly growing trend with the increase in the retention. When the wood surface attained a silver retention of 0.324 g·m−2, its anti-mold efficiency against Aspergillus niger V. Tiegh, Penicillium citrinum Thom, and Trichoderma viride Pers. ex Fr reached 80, 75, and 80%, respectively, which achieved or even exceeded the required standard value of effective mold inhibition (75%). Notably, the nano-silver leaching rate at this retention attained merely 4.75 %. The nanoparticle, well distributed on a wood surface, may promote sufficient contact with fungi as well as strong interaction with wood cell wall components, which probably contributed to the effective anti-mold efficiency and the leaching resistance. This study provided positive evidence for the anti-mold effect of nano-silver on wood surface.

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Section: Introductionmentioning

confidence: 99%

Leachability and Anti-Mold Efficiency of Nanosilver on Poplar Wood Surface

Dai

Luo

et al. 2022

Polymers

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“…Following the 'carbon neutral' goal of the Paris Agreement, the global market demand for low-carbon materials has been increasing [1,2]. As a natural low-carbon material, bamboo offers the advantages of sustainable logging and utilisation, high strength to weight ratio, high strength, and biodegradability [3][4][5]. It is not only commonly used in the construction, furniture, and interior decoration industries but also has significant application prospects in the aerospace domain [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Release Mechanism and Mould Resistance of Citral-Loaded Bamboo Strips

Peng

Zhang

et al. 2021

Polymers

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In the present study, the sustained-release system loading citral was synthesised by using PNIPAm nanohydrogel as a carrier and analysed its drug-release kinetics and mechanism. Four release models, namely zero-order, first-order, Higuchi, and Peppas, were employed to fit the experimental data, and the underlying action mechanism was analysed. The optimised system was applied to treat a bamboo mould, followed by assessment of the mould-proof performance. Our experimental results revealed that the release kinetics equation of the system conformed to the first order; the higher the external temperature, the better the match was. In the release process, PNIPAm demonstrated a good protection and sustained-release effect on citral. Under the pressure of 0.5 MPa, immersion time of 120 min, and the system concentration ratio of 1, the optimal drug-loading parameters were obtained using the slow-release system with the best release parameters. Compared to the other conditions, bamboos treated with pressure impregnation demonstrated a better control effect on bamboo mould, while the control effect on Penicillium citrinum, Trichoderma viride, Aspergillus niger, and mixed mould was 100% after 28 days. Moreover, the structure and colour of bamboo remained unchanged during the entire process of mould control.

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