By Albin F. Turbak (Eds.)
content material: Colloidal microcrystalline celluloses / O.A. Battista --
non-stop thiocarbonate-redox grafting on cellulosic substrates / W. James Brickman --
Cellulose derivatives : polymers with a destiny / Clayton D. Callihan --
Silyl cellulose / Robert E. Harmon and Kalyan ok. De --
usage of the radical response of cellulose with amic acids to provide cellulose derivatives containing carboxylic acid teams / Thomas C. Allen and John A. Cuculo --
wooden and wood-based residues in animal feeds / Andrew J. Baker, Meriill A. Millett, and Larry D. Satter --
Enzymes : particular instruments coming of age / Donald F. Durso and Anita Villarreal --
response of alkylene oxides with wooden / Roger M. Rowell --
Alkaline degradation of a nonreducing cellulose, version : 1,5-anhydro-cellobiitol / Ralph E. Brandon, Leland R. Schroeder, and Donald C. Johnson --
Nascent polyethylene-cellulose composite / R.H. Marchessault, B. Fisa, and J.F. Revol --
Formation and homes of combined nonwovens produced by means of cellulose-cellulose bonding / Raymond A. younger and Bernard Miller --
Marine polymers. five, amendment of paper with partly deacetylated chitin / G.G. Allan, J.F. Friedhoff, M. Korpela, J.E. Laine, and J.C. Powell --
software of GPC to experiences of the viscose technique. half five, impression of warmth on rayon houses / John Dyer.
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Additional info for Cellulose Technology Research
03 Relative Mass After Substitution - 1 . 3 S o l u b l e i n C o l d Water S o l u b l e i n 4 t o 8% NaOH 2 I n s o l u b l e except i n s p e c i a l s o l v e n t s l i k e DKSO & K 0 e t c . 0 DEGREE OF SUBSTITUTION Figure 5. 5 DEGREE OF SUBSTITUTION Figure 6. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1975. 0 3, CALLiHAN Cellulose Derivatives 35 f u n c t i o n of the mass increase and n e a r l y independent of the DS or the nature of the s u b s t i t u e n t . Since t h i s i s t r u e , one might p r e d i c t that a l l subsequent responses which are normally obtained by increases i n DS such as solvent s o l u b i l i t y , e t c .
2, 083, 554, (June 15, 1937). Mahoney, J. , e t . a l . , J . Am. Chem. , (1942), 64, 9. C a l k i n s , J . , J. Phys. , (1936), 40, 27. Hubbert, Μ. , Energy Resources, (1962). ; ACS Symposium Series; American Chemical Society: Washington, DC, 1975. 4 Silyl Cellulose R O B E R T E . H A R M O N and K A L Y A N K. DE Western Michigan University, Kalamazoo, Mich. 49001 E a r l y Works on Silylation The silylation (the term "silylation" i s used i n the gene r a l sense of s u b s t i t u t i o n w i t h t r i o r g a n o s i l y l groups) of numerous n a t u r a l products, i n c l u d i n g v a r i o u s sugars, has been reported in the l i t e r a t u r e , and t h i s procedure has become a commonplace operation whenever the e f f e c t s of hydrogen bonding on the p h y s i c a l p r o p e r t i e s are u n d e s i r a b l e .
The choice of the grade of c e l l u l o s e proved to be of some consequence. Depending on the p r i o r h i s t o r y of the c e l l u l o s e , the s i l y l a t i o n s go more or l e s s r e a d i l y to completion. In some cases, although most of the s t a r t i n g m a t e r i a l appeared to have reacted, some i n s o l u b l e g e l remained. , Memphis, Tennessee) are very r e a d i l y s i l y l a t e d . Cotton l i n t e r pulps from the same source were g e n e r a l l y of higher molecular weight and, although they l e f t no unreacted i n s o l u b l e m a t e r i a l , gave extremely v i s c o u s s o l u t i o n s .