Synthesis of polymeric fluorescent brightener based on coumarin and its performances on paper as light stabilizer, fluorescent brightener and surface sizing agent

2016 ◽  
Vol 367 ◽  
pp. 167-173 ◽  
Author(s):  
Guanghua Zhang ◽  
Hua Zheng ◽  
Mingyuan Guo ◽  
Lun Du ◽  
Guojun Liu ◽  
...  
Keyword(s):  
Light Stabilizer ◽  
Fluorescent Brightener ◽  
Surface Sizing

Use of thermomechanical pulp fibers from waste woods for making eco-friendly cushioning material

TAPPI Journal ◽  
2010 ◽  
Vol 9 (7) ◽  
pp. 15-21 ◽  
Author(s):  
JI-YOUNG LEE ◽  
CHUL-HWAN KIM ◽  
JEONG-MIN SEO ◽  
HO-KYUNG CHUNG ◽  
KYUNG-KIL BACK ◽  
...  
Keyword(s):  
Impact Test ◽  
Product Distribution ◽  
Expanded Polystyrene ◽  
Thermomechanical Pulp ◽  
Fiber Structure ◽  
Pulp Fibers ◽  
Cationic Starch ◽  
Thermal Insulating ◽  
Surface Sizing ◽  
The Impact

Eco-friendly cushioning materials were made with thermomechanical pulps (TMPs) from waste woods collected from local mountains in Korea, using a suction-forming method without physical pressing. The TMP cushions had superior shock-absorbing performance, with lower elastic moduli than expanded polystyrene (EPS) or molded pulp. Even though the TMP cushions made using various suction times had many voids in their inner fiber structure, their apparent densities were a little higher than that of EPS and much lower than that of molded pulp. The addition of cationic starch contributed to an increase in the elastic modulus of the TMP cushions without increasing the apparent density, an effect which was different from that of surface sizing with starch. In the impact test, the TMP cushions showed a more ductile pattern than the brittle EPS. The porosity of the TMP cushion was a little less than that of EPS and much greater than that of molded pulp. The porous structure of the TMP cushions contributed to their excellent thermal insulating capacity, which was equivalent to that of EPS. In summary, the TMP packing cushions showed great potential for surviving external impacts during product distribution.

Influence of Polymer Charge, Temperature, and Surfactants on Surface Sizing of Liner and Greaseproof Paper With Hydrophobically Modified Starch

TAPPI Journal ◽  
2009 ◽  
Vol 8 (2) ◽  
pp. 33-38 ◽  
Author(s):  
ANNA JONHED ◽  
LARS JÄRNSTRÖM
Keyword(s):  
Phase Separation ◽  
Contact Angles ◽  
Low Ph ◽  
Hydrophobically Modified ◽  
Paper Sizing ◽  
Surface Sizing ◽  
Separation Temperature ◽  
Hydrophobic Nature ◽  
Sizing Agents ◽  
Charge Temperature

The aim of this study was to investigate the properties of hydrophobically modified (HM) quaterna-ry ammonium starch ethers for paper sizing. These starches possess temperature-responsive properties; that is, gelation or phase separation occurs at a certain temperature upon cooling. This insolubility of the HM starches in water at room temperature improved their performance as sizing agents. The contact angles for water on sized liner were substantially larger than on unsized liner. When the application temperature was well above the critical phase-separation temperature, larger contact angles were obtained for liner independently of pH compared with those at the lower application temperature. Cobb60 values for liner decreased upon surface sizing, with a low pH and high application temperature giving lower water penetration. Contact angles on greaseproof paper decreased upon sur-face sizing as compared to unsized greaseproof paper, independently of pH and temperature. Greaseproof paper showed no great difference between unsized substrates and substrates sized with HM starch at different pH. This is probably due to the already hydrophobic nature of greaseproof paper. However, the Cobb60 values increased at low pH and low application temperature. Surfactants were added to investigate how they affect the sized surface. Addition of surfactant reduces the contact angles, in spite of indications of complex formation.

Process of Producing Hard Sized Paper by Using Petroleum Resin Surface Sizing Agent

1964 ◽  
Vol 18 (4) ◽  
pp. 161-168
Author(s):  
Ten Yoshii ◽  
Shigehiko Yoshioka ◽  
Keisaburo Tabuchi
Keyword(s):  
Petroleum Resin ◽  
Surface Sizing

Analysis of Defferent Premetering Techniques by Surface Sizing

2012 ◽  
Vol 66 (8) ◽  
pp. 844-851
Author(s):  
Mitsuhiro Yamazaki
Keyword(s):  
Surface Sizing

Next-generation Surface Sizing Agent

2017 ◽  
Vol 71 (4) ◽  
pp. 388-393
Author(s):  
Shiro Umeuchi
Keyword(s):  
Next Generation ◽  
Surface Sizing

Study on Surface Sizing of Cationic Polyacrylate Emulsion to Improve Mechanical Properties of Paper

2012 ◽  
Vol 200 ◽  
pp. 287-291 ◽  
Author(s):  
Quan Xiao Liu ◽  
Wen Cai Xu ◽  
Yan Na Yin
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Positive Charge ◽  
Solid Content ◽  
Drying Methods ◽  
Machine Direction ◽  
Surface Sizing ◽  
Emulsion Layer ◽  
Folding Endurance ◽  
Tearing Strength

Cationic polyacrylate emulsion was used as surface sizing agent and the effects of emulsion properties on paper mechanical properties were studied. The mechanical properties of sized paper gradually increased with the increase of solid content, viscosity and positive charge density of emulsion and decreased with the increase of particle size of emulsion. Tensile strength, folding endurance and tearing strength on machine direction were increased 33.62%, 11.99%, 6.79% respectively when the paper with single emulsion layer was used oven drying methods.

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