Heat-Setting of Polyester in function of improvement of HT Dyeing

Code

L2-5097 (C) - included in ARIS records

Head

PhD Marija Gorenšek

Period

1/1/2003 - 6/30/2005

Range in 2005

0.18 FTE

Science

Engineering sciences and technologies (8)
Other (2)

Reseacher status

Researcher (8)
Junior expert or technical associate (2)

Education

Doctor's degree (6)
Master's degree (2)
Other (2)

Sex

Woman (8)
Man (2)

Status

Employed at RO and RRD (3)
No data on employment in RO (1)
Retired (5)
Deceased (1)

No. of publications

0 (10)

Projects / Programmes source: ARIS

source: ARIS

Heat-Setting of Polyester in function of improvement of HT Dyeing

Research activity

Code	Science	Field	Subfield
2.14.02	Engineering sciences and technologies	Textile and leather	Textile chemistry

Code	Science	Field
T000	Technological sciences

Keywords

heat- setting, polyester, restricted state, unrestricted state, oligomers, high temperature dyeing

Evaluation (rules)

source: COBISS

Evaluation of bibliographic research performance indicators according to ARIS methodology

Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases

source: WoS

source: Scopus

source: COBISS

Researchers (10)

no.	Code	Name and surname	Research area	Role	Period	No. of publicationsNo. of publications
1.	11411	PhD Sabina Bračko	Communications technology	Researcher	2003 - 2005	0
2.	02015	PhD Vili Bukošek	Textile and leather	Researcher	2003 - 2005	0
3.	11766	PhD Petra Eva Forte Tavčer	Textile and leather	Researcher	2003 - 2005	0
4.	01310	PhD Marija Gorenšek	Textile and leather	Head	2003 - 2005	0
5.	22532	MSc Olga Jarc	Chemical engineering	Researcher	2003 - 2005	0
6.	20045	PhD Petra Kovačič	Textile and leather	Researcher	2003 - 2005	0
7.	18612	Dušana Leskovšek		Technical associate	2003 - 2005	0
8.	18610	Zdenka Lindič		Technical associate	2003 - 2005	0
9.	06930	PhD Franci Sluga	Textile and leather	Researcher	2003 - 2005	0
10.	20571	MSc Veronika Vrhunc	Materials science and technology	Researcher	2003 - 2005	0

Organisations (1)

no.	Code	Research organisation	City	Registration number	No. of publicationsNo. of publications
1.	1555	University of Ljubljana, Faculty of Natural Sciences and Engeneering	Ljubljana	1627074	7

Abstract

Polyester, with the world-wide production of approximately 10.5 millions tons per year, is the dominating man-made fiber type. The parameters of heat setting have a great influence on the molecular fiber structure. The textile industry in Slovenia is forced to buy a cheap polyester to be competitive on the market. Because of the oligomer migration to the fiber surface such a cheap material causes many problems during processing of polyester fibers. One example of this is HT dyeing of polyester fibers. The cyclic trimer shows up as a white dust. During dyeing process oligomer deposition occurs on the surface of the textile material or on the parts of the dyeing machines. Such a polyester also causes dusting of oligomers during rewinding. The dye producers are using alkaline dyeing of polyester to reduce the problems caused by oligomers. Preliminary research has shown that there is not enough disperse dyes stable in alkaline media and this is the reason that polyester is still dyed mainly under acid conditions. Therefore we have tried to reduce the problems caused by oligomers with alkaline pretreatment before acid HT dyeing. This method is patented. It is known that oligomer migration to the fiber surface depends on parameters of heat setting and therefore is sensible to research these parameters. Many researches related to the different heat set polyester fibers, but nobody has investigated the quantity of oligomers and their composition after each thermal treatment during processing of polyester fibers. The objective of our work is to evaluate the influence of temperature and time of heat setting of polyester in restricted and unrestricted state on the quantity of oligomers after thermal treatment and after acid HT dyeing.