Degradable Gelatin-Based Supramolecular Coating for Green Paper Sizing

Author(s):  
Xuechuan Wang ◽  
Yun Liu ◽  
Xinhua Liu ◽  
Xiangyu You ◽  
Hui Jie Zhang
Keyword(s):  
TAPPI Journal ◽  
2009 ◽  
Vol 8 (2) ◽  
pp. 33-38 ◽  
Author(s):  
ANNA JONHED ◽  
LARS JÄRNSTRÖM

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.


2007 ◽  
Vol 12 (3) ◽  
pp. 188-189
Author(s):  
Tvrtko-Matija Šercar
Keyword(s):  

Author(s):  
Thomas C. Guiney

The chapter examines the legislative planning process that gradually refined the early release framework eventually given legal effect by Part Two of the Criminal Justice Act 1991. The chapter begins with a review of the post-election planning process that gathered pace following the 1987 General Election. It examines the Home Office strategic awayday held at Leeds Castle in September 1987 and goes on to consider the Green Paper, Punishment, Custody and the Community and an unprecedented conference at Ditchley Park which brought together senior decision-makers from across the criminal justice system. The chapter then examines the passage of the Criminal Justice Bill 1990/91 and reflects upon the dramatic backlash against the new parole system in the mid-1990s. The chapter concludes with a critical appraisal of the underlying tensions that defined the development of criminal justice during this transitional period.


Cellulose ◽  
2021 ◽  
Author(s):  
Alice Gimat ◽  
Anne Michelin ◽  
Oulfa Belhadj ◽  
Eleonora Pellizzi ◽  
Pascale Massiani ◽  
...  
Keyword(s):  

Cellulose ◽  
2010 ◽  
Vol 17 (3) ◽  
pp. 649-659 ◽  
Author(s):  
Xu Li ◽  
Junfei Tian ◽  
Wei Shen

1995 ◽  
Vol 37 (2) ◽  
pp. 203-217 ◽  
Author(s):  
Michael O'Donnell

Decentralizing industrial relations within New South Wales is a central recom mendation of the Niland Green Paper (1989). Decentralism also represents the cornerstone of the New South Wales government's industrial relations reform agenda enshrined in the New South Wales Industrial Relations Act 1991. To date there has been little analysis of the impact o f this legislative change on industrial relations in the New South Wales public sector. This paper provides a case study that examines the degree to which responsibility for bargaining has been devolved within the Parks and Gardens of the New South Wales Ministry for the Environ ment. It argues that, in contrast to the rhetoric of the New South Wales Act, the central agency presiding over the introduction of enterprise bargaining in the public sector, the Public Employment and Industrial Relations Authority; has been reluctant to delegate responsibility to parties in the workplace.


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