Polyvinyl alcohol was used as a halochromic carrier material for anthocyanins extracted from bracts of Euphorbia pulcherrima. Including anthocyanins in halochromic carrier improved the thickness, solubility, swelling ...Polyvinyl alcohol was used as a halochromic carrier material for anthocyanins extracted from bracts of Euphorbia pulcherrima. Including anthocyanins in halochromic carrier improved the thickness, solubility, swelling capacity, water vapor permeability, antioxidant properties, and tensile strength of the films. The high levels of anthocyanins decreased the water contact angle to 60.48°. Adding anthocyanins to films altered the color of halochromic films in response to exposure to ammonia emission or pH changes, allowing for the creation of smart sensors. The artificial biosensors altered the color linked to decreased freshness of the minced meat primarily because of ammonia generation and pH changes as the meat decays. One key point is that halochromic sensors can biodegrade and break down under simulated environmental conditions in just 30 days. In general, the created intelligent biosensors could be utilized as halochromic materials to detect the initial stages of food spoilage.展开更多
Smart textile was developed in this paper,which could change color according to the p H value, meanwhile keep the flexibility,breathability,light weight and large cover of textiles. In this study p H sensitive fabrics...Smart textile was developed in this paper,which could change color according to the p H value, meanwhile keep the flexibility,breathability,light weight and large cover of textiles. In this study p H sensitive fabrics were prepared by sol-gel method with two common p H indicators methyl red( MR) and bromocresol green( BCG). The finished textiles present different halochromic behaviors with different dyeing methods. The oragic-inoragnic network,identified by Fourier transformed infrared spectrum( FTIR) and solid state nuclear magnetic resonance( NMR),plays a key role in holding stability against leaking,and the cell viability keeps pace with the leaking process. The interaction between the gel matrix and indicators depends on the charges and size of vip molecules.展开更多
文摘Polyvinyl alcohol was used as a halochromic carrier material for anthocyanins extracted from bracts of Euphorbia pulcherrima. Including anthocyanins in halochromic carrier improved the thickness, solubility, swelling capacity, water vapor permeability, antioxidant properties, and tensile strength of the films. The high levels of anthocyanins decreased the water contact angle to 60.48°. Adding anthocyanins to films altered the color of halochromic films in response to exposure to ammonia emission or pH changes, allowing for the creation of smart sensors. The artificial biosensors altered the color linked to decreased freshness of the minced meat primarily because of ammonia generation and pH changes as the meat decays. One key point is that halochromic sensors can biodegrade and break down under simulated environmental conditions in just 30 days. In general, the created intelligent biosensors could be utilized as halochromic materials to detect the initial stages of food spoilage.
基金the UK-China Joint Laboratory for Therapeutic Textiles(Based at Donghua University)Textile Biomaterials Science and Technology Innovation Intelligence(111 Project),China(No.B07024)
文摘Smart textile was developed in this paper,which could change color according to the p H value, meanwhile keep the flexibility,breathability,light weight and large cover of textiles. In this study p H sensitive fabrics were prepared by sol-gel method with two common p H indicators methyl red( MR) and bromocresol green( BCG). The finished textiles present different halochromic behaviors with different dyeing methods. The oragic-inoragnic network,identified by Fourier transformed infrared spectrum( FTIR) and solid state nuclear magnetic resonance( NMR),plays a key role in holding stability against leaking,and the cell viability keeps pace with the leaking process. The interaction between the gel matrix and indicators depends on the charges and size of vip molecules.
