Accueil
Détail de l'auteur
Auteur Jian Cao |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
Dry heat resistance of hide and leather / Keyong Tang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVIII, N° 5 (05/2003)
[article]
Titre : Dry heat resistance of hide and leather Type de document : texte imprimé Auteurs : Keyong Tang, Auteur ; Jian Cao, Auteur ; F. Wang, Auteur ; Jie Liu, Auteur Année de publication : 2003 Article en page(s) : p. 168-172 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this paper, the dry heat resistance of hide and leather is studied by means of thermal platform microscope. Such factors as drying, tanning, types of tanning agents and tannage degree that may affect the dry heat resistance of hide and leather are included. Changes and mechanisms of samples when dry heated are analyzed and discussed. We use KCrSO4, CrCl3, Cr(NO3)3 and Sugar reduced chrome liquor as tanning agents to study tanning effects on the dry heat resistance of hide fiber. It can be found that chrome tanning may reduce the initial shrinkage temperature, and increase the final shrinkage temperature. It is to say that chrome tanning may broaden the shrinkage range of hide fiber. Dry heat resistance of hide fibers with different degrees of tanning is also studied. Shrinkage ratio of hide fiber tanned with KCrSO4 decreases with increasing KCrSO4 concentration in the tanning liquors. Hide fiber tanned with sugar -reduced chrome liquor posseses the best dry heat resistance in all the four kinds of tanned hide fiber samples studied. En ligne : https://drive.google.com/file/d/1-GYy6UELCOng4wCs7e5IBk7aASQ5CREu/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4119
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVIII, N° 5 (05/2003) . - p. 168-172[article]Réservation
Réserver ce documentModification of collagen hydrosylate be edac / Keyong Tang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 1 (01-02/2008)
[article]
Titre : Modification of collagen hydrosylate be edac Type de document : texte imprimé Auteurs : Keyong Tang, Auteur ; Jian Cao, Auteur ; Wang Jintao, Auteur ; Wang Zhongtai, Auteur Année de publication : 2008 Article en page(s) : p. 23-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Carbodiimides
Collagène
Emulsification
Emulsions -- Stabilité
Huiles et graisses -- Absorption
Humidité -- Absorption:Eau -- Absorption
Hydrolysats de protéines
Matériaux -- Modifications chimiques
Poids moléculaires
TempératureIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The work in this paper describes the modification of collagen hydrolysate with 1-ethyl-3- (3-dimethyl aminopropyl)-carbodiimide (EDAC). The effects of factors that may affect the cross-linking reactions in the process of modification such as EDAC level, reaction temperature, reaction time, and pH were studied. The optimal modification conditions were obtained to give modified products with the best emulsification and emulsion stability. Changes in molecular weight, emulsification capacity, emulsification stability, water absorption and oil absorption of the collagen hydrolysate before and after modification were studied and compared. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Determination of molecular weight of collagen hydrolysate - Chemical modification - Determination of emulsification capacity and emulsification stability - Determination of water absorption - Determination of oil absorption - Orthogonal experiment
- RESULTS AND DISCUSSION : Influence of EDAC level on emulsification capacity, emulsification stability and molecular weight - Influence of pH on emulsification capacity, emulsification stability and molecular weight - Influence of reaction time on emulsification capacity, emulsification stability and molecular weight - Influence of reaction temperature on emulsification capacity, emulsification stability and molecular weight - Orthogonal Tests - Changes of molecular weight and functional properties of collagen hydrolysate before and after modification
- Table 1 : Levels of factors in orthogonal tests
- Table 2 : Design and results of orthogonal tests
- Table 3 : Several functional properties of collagen hydrolysate before and after modification with EDACEn ligne : https://drive.google.com/file/d/1nALamChUCcdYL4y5zofFJjVkmiQw_inM/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38918
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 1 (01-02/2008) . - p. 23-29[article]