�ber die quantitative Bestimmung von Pentosen mittels Bromwasserstoffs�ure

Jayme, Georg; Sarten, Paula

doi:10.1007/bf01489045

Cited by 65 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… stock: Bleached spruce sulfite paper pulp of 87·05%α‐cellulose (Merkblatt IV/29 Zellcheming; German Association of Cellulose Chemistry & Engineering), 7·8% pentosans (Jayme and Sarten 1940), trace lignin (The Institute of Paper Chemistry 1951) and 0·201% ash, as a paper substrate, was delivered from RAKTA Paper Mill, Alexandria, Egypt. Additives: Bacterial cellulose (BC) and BC phosphate (PCBC) were used as paper additives. Gluconacetobacter subsp .…”

Section: Methodsmentioning

confidence: 99%

Performance of improved bacterial cellulose application in the production of functional paper

Basta

El‐Saied

2009

Journal of Applied Microbiology

View full text Add to dashboard Cite

Aim: The purpose of this work was to study the feasibility of producing economic flame retardant bacterial cellulose (BC) and evaluating its behaviour in paper production. Methods and Results: This type of BC was prepared by Gluconacetobacter subsp. xylinus and substituting the glucose in the cultivation medium by glucose phosphate as a carbon source; as well as using corn steep liquor as a nitrogen source. The investigated processing technique did not dispose any toxic chemicals that pollute the surroundings or cause unacceptable effluents, making the process environmentally safe. The fire retardant behaviour of the investigated BC has been studied by non‐isothermal thermogravimetric analysis (TGA & DTGA). The activation energy of each degradation stage and the order of degradation were estimated using the Coats–Redfern equation and the least square method. Strength, optical properties, and thermogravimetric analysis of BC‐phosphate added paper sheets were also tested. Conclusions: The study confirmed that the use of glucose phosphate along with glucose was significant in the high yield production of phosphate containing bacterial cellulose (PCBC1); more so than the use of glucose phosphate alone (PCBC2). Incorporating 5% of the PCBC with wood pulp during paper sheet formation was found to significantly improve kaolin retention, strength, and fire resistance properties as compared to paper sheets produced from incorporating bacterial cellulose (BC). Significance and Impact of the Study: This modified BC is a valuable product for the preparation of specialized paper, in addition to its function as a fillers aid.

show abstract

Section: Methodsmentioning

confidence: 99%

Performance of improved bacterial cellulose application in the production of functional paper

Basta

El‐Saied

2009

Journal of Applied Microbiology

View full text Add to dashboard Cite

show abstract

“…Newsprint paper was used as a reinforcement for rubber composites. The chemical and physical analyses of the fiber waste were carried out according to standard methods30–33 and were recorded in Table I.…”

Section: Methodsmentioning

confidence: 99%

Newsprint paper waste as a fiber reinforcement in rubber composites

El‐Nashar¹,

Abd‐El‐Messieh

Basta

2003

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The investigation of the economical use of lignocellulose waste, which is one of the environmental problems facing third-world nations, is ongoing. In this study, we intended to increase the use of newsprint fibers in the rubber industry. For this reason, we treated newsprint fibers with sodium silicate and magnesium chloride, and we examined the water retention values and thermal degradation analyses of the treated fiber waste. The activation energy of degradation was evaluated with the Coats-Redfern method of analysis. The effects of the addition of different amounts [0 -60 parts per hundred parts of rubber by weight (phr)] of untreated and treated newsprint fibers on both the electrical and mechanical properties of two different types of rubber (natural rubber and acrylonitrile rubber) were studied. This study led us to the conclusion that the addition of treated newsprint fiber waste at a concentration of 40 phr could lead to an end product characterized by good electrical and mechanical properties.

show abstract

“…Lignin and α‐cellulose contents were determined according to Tappi standards T 22,205 ‐ 54 and T 17m ‐ 55, respectively, hemicellulose was determined according to Jayme and Sarten 17. The results are presented in Table I.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical properties of prepared ion‐exchangers from cellulose incorporated with different functional group

Nada

Adel

2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

Bagasse raw material and bleached bagasse pulp were used to prepare carbamoyl ethyl and cyanoethyl cellulose which were converted to ion exchangers. The effect of crosslinking on the properties of the carbamoyl ethyl and cyanoethyl cellulose was investigated. The molecular structure of the produced resin was also studied via infrared spectroscopy. New bands were seen at 2252 cm À1 and a shoulder at 3140 cm À1, which are due to the cyano group (in cyanoethylated cellulose) and amino group (in the carbamoyl ethyl cellulose). Also, another band was appeared at 1715 cm À1 , which is due to the carboxyl group, formed due to hydrolysis of cyanoethyl or carbamoyl ethyl cellulose. Thermal gravimetric analysis (TGA) of the produced resin was studied. The existence of both cyano group and carbamoyl group increased the resistance of cellulose towards the thermal treatment. The efficiency of the produced resin towards metal ions uptake from solution mixture (Cu, Ni, and Cr) was also studied.

show abstract

�ber die quantitative Bestimmung von Pentosen mittels Bromwasserstoffs�ure

Cited by 65 publications

References 4 publications

Performance of improved bacterial cellulose application in the production of functional paper

Performance of improved bacterial cellulose application in the production of functional paper

Newsprint paper waste as a fiber reinforcement in rubber composites

Physicochemical properties of prepared ion‐exchangers from cellulose incorporated with different functional group

Contact Info

Product

Resources

About