Nanoclay cross-linked semi-IPN silk sericin_poly(NIPAm_LMSH) nanocomposite hydrogel: An outstanding antibacterial wound dressing
作者：Chaochao Yang(楊超超) Rui Xue（薛蕊） Qingsong Zhang（張青松）
關鍵字：Nanocomposite, hydrogel, sericin, Wound dressing
論文來源：期刊
具體來源：Materials Science & Engineering C
發表時間：2017年
High antibacterial and skin-like hydrogels have always been the perfect wound dressing for human to protect wound from infection. Here, based on silk sericin, we design a series of nanoclay lithium magnesium silicate
hydrate (LMSH) cross-linked semi-IPN sericin/poly(NIPAm/LMSH) (HSP) nanocomposite hydrogels and demonstrate advantages in serving as antibacterial wound dressing in comparison with gauze. Firstly, the effect of
mass ratios of sericin/(sericin + NIPAm) upon pore structure, feasibility of mechanics and gas permeability of HSP nanocomposite hydrogels were evaluated. Then, the relationship between nanocomposite hydrogel and
histological/antimicrobial properties was systematically analyzed. It was found that, the introduction of sericin increased internal pore size, leading to obvious transition from honeycomb to layered structure. Furthermore, as
mass ratio of sericin/(sericin + NIPAm) is 20%, the wound healing area treated with nanocomposite hydrogels at 6th day reached up to 83%, 3 times of gauze, and almost recovered at 13th day. Especially, antibacterial
mechanism can be thought to be the results that the macromolecular sericin embedded in the nanocomposite hydrogel adsorbed bacteria by charge interaction and micromolecular sericin dissociating out from nanocomposite hydrogels can be adsorbed onto bacteria.