- Type of paper
: Paper in journal
Title: THERMAL PROPERTIES OF POLY(VINYL CHLORIDE) OF DIFFERENT
K-VALUES
- Authors:
- Kovačić, Tonka (22752)
- Roje, Urban (41413)
- Klarić, Ivka (21115)
- Nardelli, Antun (33155)
Journal: POLIMERI
Number: 1
Volume: 12
Year: 1991
Pages: from 5 to 9
Number of references: 11
Language: hrvatski
Summary: Thermal degradation of poly(vinyl chloride) (PVC) with
differentK-values was investigated. The influence of K-value
onthermodinamic behaviour, i.e. glass tnansition and specific heatcapacity,
was studied as well. The K-values of polymers have beencompared with the
main caracteristics of thermograms, the rateconstant, apparent activation
energies and half-life time. Thekinetic parameters confirmed the dependence
of thermal stabilityand K-value.
Keywords: thermal properties of PVC, glass transition temperature, kinetic parameters of the degradation process, specific heat capacity
- Type of paper
: Paper in journal
Title: VISCOSIMETRIC INVESTIGATION OF MISCIBILITY OF POLY(VINYL
CHLORIDE) WITH OTHER POLYMERS
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
- KOVAČIĆ, TONKA (22752)
- Nardelli, Antun (33155)
Journal: POLIMERI
Number: 1
Volume: 12
Year: 1991
Pages: from 10 to 12
Number of references: 10
Language: hrvatski
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: Paper in journal
Title: ESTERIFICATION PROCESSES FOR PVC PLASTICIZER SYNTHESIS
- Authors:
- Roje, Urban (41413)
Journal: POLIMERI
Number: 1
Volume: 12
Year: 1991
Pages: from 13 to 24
Number of references: 93
Language: hrvatski
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: Paper in journal
Title: THERMOGRAVIMETRIC INVESTIGATION OF THERMAL DEGRADATION OF
PVC/ABS BLENDS
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
Journal: POLIMERI
Number: 3
Volume: 13
Year: 1992
Pages: from 75 to 79
Number of references: 10
Language: hrvatski
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: Paper in journal
Title: THERMOGRAVIMETRIC STUDY OF THERMAL DEGRADATION OF
POLY(VINYL CHLORIDE)/POLY(alpha-METHYLSTYRENE-ACRYLONITRILE) BLENDS
- Authors:
- Kovačić, Tonka (22752)
- Klarić, Ivka (21115)
- Barić, Branka (188492)
Journal: POLIMERI
ISSN: 0351-1871
Volume: 13
Year: 1992
Pages: from 58 to 61
Number of references: 11
Language: hrvatski
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: Paper in journal
Title: THERMAL DEGRADATION OF POLY(VINYL
CHLORIDE)/POLY(alpha-METHYLSTYRENE-ACRYLONITRILE) BLENDS
- Authors:
- Kovačić, Tonka (22752)
- Klarić, Ivka (21115)
- Nardelli, Antun (33155)
- Barić, Branka (188492)
Journal: Polymer Degradation and Stability
Number: 1
Volume: 40
Year: 1993
Pages: from 91 to 96
Number of references: 11
Language: engleski
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: Paper in journal
Title: THE APPLICATION OF KINETIC MODELS TO THE PROCESS OF
THERMAL DEGRADATION OF POLY(VINYL CHLORIDE)/ACRYLONITRILE-BUTADIENE-STYRENE
BLENDS
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
Journal: Polimeri
Number: 2
Volume: 15
Year: 1994
Pages: from 47 to 52
Language: hrvatski
Summary: When different kinetis models are applied to data obtained
by the isothermal thermogravimetric degradation of PVC/ABS blends, it
becomes evident that at temperatures of 210-240 C the process of thermal
degradation occurs in the transient area with the autocatalytic action of
hydrogenchloride for the degrees of conversion of 5-30 % and 5-15%,
depending on the composition of the blend. The effect of chengeability of
the process variables on the apparent activation energy (E) and on the
pre-exponential factor (Z) is excluded by the calculation of the
compensation parameters (Sp=E/logZ). By modifying the blend composition,
only the kinetics of the process are changed.
Keywords: PVC/ABS blends, thermal degradation, isothermal thermogravimetry, kinetic models
- Type of paper
: Summary in proceedings
Title: KINETICS OF THERMAL DEGRADATION OF
POLY(VINYL-CHLORIDE)/ACRYLONITRILE-BUTADIENE-STYRENE BLENDS
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
- Kovačić, Tonka (22752)
Pages: from 0 to 0
- Type of paper
: Summary in proceedings
Title: THERMOOXIDATIVE DEGRADATION OF POLY(VINYL
CHLORIDE)/ACRYLONITRILE-BUTADIENE-STIRENE BLENDS
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
Proceedings title: 5th European Polymer Federation Symposium of Polymeric Materials
Language: engleski
Place: Basel, Switzerland
Year: 1994
Pages: from 2.45 to 2.45
Meeting: 5th EUROPEAN POLYMER FEDERATION SYMPOSIUM OF POLYMERIC MATERIALS
Held: from 10/09/94 to 10/12/94
Summary: The thermal degradation process of PVC/ABS blends was
investigated by dynamic thermogravimetry in the temperature range 50-650 C
in air. The thermooxidative degradation of PVC/ABS blends takes place in
three stages. The first stage, presented by dehydroclorination, is the most
rapid. The apparent activation energies of the first grade degradation and
preexponential factors, calaulated after Kissinger method, are equivalent
to the values for the thermal degradation of PVC/ABS blends in inert.
Keywords: thermooxidative degradation, PVC/ABS blends, dynamic thermogravimety, KIssinger method
- Type of paper
: Summary in proceedings
Title: EFFECT OF MISCIBILITY ON THERMAL DEGRADATION OF
PVC/MS-AN-MMA
- Authors:
- Kovačić, Tonka (22752)
- Barić, Branka
- Klarić, Ivka (21115)
Proceedings title: 5th Euroopean polymer Federation Symposium of Polymeric Materials
Language: engleski
Place: Basel, Switzerland
Year: 1994
Pages: from 2.40 to 2.40
Meeting: 5th EUROPEAN POLYMER FEDERATION SYMPOSIUM OF POLYMERIC MATERIALS
Held: from 10/09/94 to 10/12/94
Summary: The thermal degradation of miscible and immscible system of
PVC/MS-AN-MMA blends has been investigated by means of dynamic
thermogravimetry. The blends were prepared with two different methods. The
effect of the degradation products of one polymer on the degradation
process of the other polymer in the blend was estabilished. The method of
preparation of samples, i.e. miscibility or immiscibility, does not affect
the nonisothermal degradation of PVC/MS-AN-MMA blends.
Keywords: PVC/MS-AN-MMA blends, miscibility, thermal degradation, method of preparation samples
- Type of paper
: Summary in proceedings
Title: INVESTIGATION OF MISCIBILITY AND THERMAL STABILITY OF
POLY(VINYL CHLORIDE)/POLY(BUTHYLENE TEREPHALATE) BLENDS
- Authors:
- Barić, Branka
- Kovačić, Tonka (22752)
Proceedings title: 5th European Polymer Federation Symposium of Polymeric Materials
Language: engleski
Place: Basel, Switzerland
Year: 1994
Pages: from 2.93 to 2.93
Meeting: 5th EUROPEAN POLYMER FEDERATION SYMPOSIUM OF POLYMERIC MATERIALS
Held: from 10/09/94 to 10/12/94
Summary: In this work the behaviour of polymer blend PVC/PBT,
dissolved in the mixture of phenol and 1,2 dichlorobenzene (1:1), has been
investigated. By DSC method the immiscibility for all the compositions has
been estabilished and the fraction of crystalline phase of PBT in the
blends is unchanged. Three degradation stages can be observed on the TG
curves of the blends: 1) dehydrochlorination of PVC, 2) degradation of the
PBT and 3) carbonization of dehydrochlorinated residue. PVC does not affect
the thermal degradation of PBT in the blend.
Keywords: PVC/PBT blends, miscibility, thermal stability
- Type of paper
: Summary in proceedings
Title: MISCIBILITY OF POLY(VINYL CHLORIDE)/POLY(BUTYLENE
TEREPHALATE)
- Authors:
- Barić, Branka
- Kovačić, Tonka (22752)
Proceedings title: 12. Dani društva plastičara i gumaraca
Language: hrvatski
Place: Zagreb
Year: 1994
Pages: from 132 to 135
Meeting: 12. DANI DRUŠTVA PLASTIČARA I GUMARACA
Held: from 06/21/94 to 06/24/94
Summary: In this work the miscibility of PVC/PBT blends with until
30% plasticizer and without plasticizer (DOP) was invastigated. The
temperature of glass transition and melting point of the samples were
determined by the DSC method. It was found that PVC/PBT blends are
immiscible. The blends of PVC/PBT with DOP which containe more than 50% PBT
have lower glass transition temperature then PVC/DOP blends. The another
indicator of immiscibility is existing of crystalline phase of PBT. The
melting point of PBT decreased with increasing of PVC fraction.
Keywords: PVC/PBT blends, miscibility, DSC
- Type of paper
: Summary in proceedings
Title: ISOTHERMAL DEGRADATION OF POLY(VINYL
CHLORIDE)/METHYLMETACHRILATE-BUTADIENE-STYRENE BLENDS
- Authors:
- Barić, Branka
- Kovačić, Tonka (22752)
Proceedings title: XIV Skup hrvatskih kemičara i IV Hrvatski simpozij o kemiji i tehn. makromol.
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 446 to 446
Meeting: XIV SKUP HRVATSKIH KEMIČARA I IV HRVATSKI SIMPOZIJ O KEMIJI I TEHNOLOGIJI MAKROMOLEKULA
Held: from 02/06/95 to 02/08/95
Summary: The process of thermal degradation of PVC/MBS blends in
inert atmosphere was invastigated by means of isothermal thermogravimety at
230,240,250 i 260 C. Applying different kinetic models in this temperature
ranges complexity of the degradation process was found. The major
degradation reactions are dehydrochlorination of PVC and diffusion of
degradation products. The immiscibility of homopolymer and terpolymer was
estabilished by DSC method.
Keywords: PVC/MBS blends, thermal degradation, DSC, kinetic models
- Type of paper
: Summary in proceedings
Title: INVESTIGATION OF THERMOOXIDATIVE DEGRADATION OF PVC/ABS
BLENDS BY INFRARED SPECTROSCOPY
- Authors:
- Klarić, Ivka (21115)
- Roje, Urban (41413)
Proceedings title: XIV Skup hrvatskih kemičara i IV Hrvatski simpozij o kemiji i tehn. makromol.
Language: hrvatski
Place: Zagreb
Year: 1995
Pages: from 448 to 448
Meeting: XIV SKUP HRVATSKIH KEMIČARA I IV HRVATSKI SIMPOZIJ O KEMIJI I TEHNOLOGIJI MAKROMOLEKULA
Held: from 02/06/95 to 02/08/95
Summary: The thermal degradation of PVC modyfing with ABS was
investigated. The polymer films were degradated in spectrophotometer cell
at 160 C with continous air floww. The increas of apsorption of hydroxyl
and carboxyl groups and apsorption strings of polien and aromats were
estabilishrd. The hydroxyl and carboxyl indexes of PVC;ABS and PVC/ABS
blends were calculated. The blend with 10% modifer is the most stable.
Keywords: PVC/ABS blends, thermooxidative degradtion, infrared spectroscopy
- Type of paper
: Ph.D.
Title: STUDY OF THERMAL DEGRADATION PROCESSES OF POLY(VINYL
CHLORIDE)/ACRYLONITRILE-BUTADIENE-STYRENE BLENDS
Faculty: Tehnološki fakultet Sveučilište u Splitu
Author: KLARIĆ IVKA
Date of defense: 07/21/92
Language: hrvatski
Number of pages: 182
Summary:
Keywords: Žś€Ş¸ĆÔâđţ
- Type of paper
: M.A.
Title: THERMAL DEGRADATION OF POLY(VINYL
CHLORIDE)/POLY(METHYLMETHACRYLATE-BUTADIENE-STYRENE)
Faculty: Fakultet kemijskog inženjerstva i tehnologije Sveučitište u Zagrebu
Author: BARIĆ BRANKA
Date of defense: 04/20/95
Language: hrvatski
Number of pages: 128
Summary: The process of thermal degradation of PVC/MBS blends in
inert atmosphere was investigated by means of isothermal ans nonisothermal
thermogravimetry. Two commercial samples of MBS of different impact
strenght was used. Thermal degradation in isothermal conditions was
followed at 230,240,250 and 260 C during 120 minutes. Nonisothermal
measurments were carried out in the temperature range from 50 to550 C.
Applying different kinetic models in the conversion degree range 0,05 to
0,30 the complexity of the degradation process was found and going on in
the kinetic and diffusion region. The kinetic parameters of the process
were determined: apparent activation energy and preexponential
factor.According to the compensation parameters the machanism of
degradation of PVC was unchanged; by adding the MBS only the kinetics of
the processchanges. PVC blend containing the MBS of lower impact strenght
has shown better thermal stability and by means of differential scanning
calorimetry better compability was found.
Keywords: kinetic models, kinetic parameters, PVC/MBS blends, thermogravimetry
- Type of paper
: Mentorship
Title: THERMAL DEGRADATION OF POLY(VINYL
CHLORIDE)/POLY(METHYLMETHACRYLATE-BUTADIENE-STIRENE)
Faculty: Tehnološki fakultet Sveučilište u Splitu
Mentor: KOVAČIĆ TONKA
Date of defense: 04/20/95
Number of pages: 128
Author: Barić Branka
Degree level: M.A.
- Type of paper
: Invited lecture
Title: INVESTIGATION OF POLYMER BLENDS BY THERMAL ANALYSIS
Institution: DRUŠTVO PLASTIČARA I GUMARACA
Year: 1995
- Type of paper
: Invited lecture
Title: THERMAL DEGRADATION OF POLY(VINYL CHLORIDE) AND
ACRYLONITRILE/BUTADIENE/STYRENE BLENDS
Institution: DRUŠTVO PLASTIČARA I GUMARACA
Year: 1995
