Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Vipul Davé"'
Publikováno v:
Machines, Vol 12, Iss 6, p 373 (2024)
Timely prediction of bearing faults is essential for minimizing unexpected machine downtime and improving industrial equipment’s operational dependability. The Q transform was utilized for preprocessing the sixty-four vibration signals that corresp
Externí odkaz:
https://doaj.org/article/a513794318f14bc79dae6ef5b893c952
Autor:
Vipul Davé, Wolfgang G. Glasser
Publikováno v:
Polymer. 38:2121-2126
Continuous fibers from blends of cellulose acetate butyrate (CAB) with lignin (L) were spun from liquid crystalline solution. Morphological investigations suggest that CAB and L form blends with considerable phase mixing. The porosity of the surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de0074a5584fc46bfc05cbfb691ffda8
https://doi.org/10.1016/s0032-3861(96)00784-7
https://doi.org/10.1016/s0032-3861(96)00784-7
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 33:2045-2054
Cellulose derivatives with low degrees of substitution (i.e., DS C 6 ), and they have T g s within 5-20°C of their T m s. This proximity is unusual for a semicrystalline material, and it interferes with the crystallization process that occurs betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75622fb26c258254b42be90f8b7569e2
https://doi.org/10.1002/polb.1995.090331406
https://doi.org/10.1002/polb.1995.090331406
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 32:1105-1114
Cellulose acetate butyrate (CAB) fibers were prepared by spinning from liquid crystalline (LC) solutions containing lithium chloride (LiCl). Ionic interactions were observed between carbonyl oxygen and lithium cation by 13C nuclear magnetic resonance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee49198676b4eee7f9b516df78d0e45a
https://doi.org/10.1002/polb.1994.090320615
https://doi.org/10.1002/polb.1994.090320615
Publikováno v:
Journal of Wood Chemistry and Technology. 13:545-559
Absolute molecular weights of several commercially and semi-commercially available lignins were determined by gel permeation chromatography (GPC with a differential viscosity detector (DV). Solubility in THF was assured by acetylation. Polystyrene mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3de2fd2c5bacee2ccde2ce5799fd1ae
https://doi.org/10.1080/02773819308020533
https://doi.org/10.1080/02773819308020533
Publikováno v:
Journal of Applied Polymer Science. 49:1671-1678
Tri-O-α-naphthylmethyl cellulose was prepared by homogeneous phase reaction using SO2–diethylamine (DEA)–dimethyl sulfoxide (DMSO) as the solvent system. Observations made by dynamic mechanical spectrometry and by cross-polarized optical microsc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1261ad2602932a949c26f7520cf0ff82
https://doi.org/10.1002/app.1993.070490920
https://doi.org/10.1002/app.1993.070490920
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 31:1145-1161
Fibers were spun from isotropic and anisotropic DMAc solutions of cellulose esters. Take-up speeds of the dry jet/wet spinning process varied. Water served as the coagulant. The mechanical properties of the fibers increased as spinning progressed fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92a966a513905c767e02f2764061e16a
https://doi.org/10.1002/polb.1993.090310910
https://doi.org/10.1002/polb.1993.090310910
Autor:
Vipul Davé, Wolfgang G. Glasser
Publikováno v:
Journal of Applied Polymer Science. 48:683-699
Cellulose and a cellulose hexanoate ester (DS 0.69) exhibited liquid crystalline behavior in dimethylacetamide/lithium chloride and dimethylacetamide, respectively. The experimentally observed critical volume fraction (Vcp) of cellulose was lower tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff646e8d617239754ca5dcf4dcc6ec0a
https://doi.org/10.1002/app.1993.070480411
https://doi.org/10.1002/app.1993.070480411
Publikováno v:
Polymer. 34:3144-3154
Thermotropic liquid-crystalline (LC) behaviour of lignin-like model compounds, lignin, (commercial) petroleum pitch and blends of lignin and pitch was studied using hot-stage optical microscopy. The results indicate that, while all the dimeric lignin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5937443aa2fb570325a797e0ae269952
https://doi.org/10.1016/0032-3861(93)90382-k
https://doi.org/10.1016/0032-3861(93)90382-k
Publikováno v:
Polymer Bulletin. 29:565-570
Transmission electron microscopy provides direct evidence of helicoidal cholesteric morphology in films of cellulose acetate butyrate prepared by solvent casting from liquid crystalline solutions in dimethylacetamide. We believe this is the first obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20ac1e7e75e148bb7cb6d9ffa6b23809
https://doi.org/10.1007/bf00296719
https://doi.org/10.1007/bf00296719