Rheological Properties and Bonding Properties of Modified Poly（Propylene Carbonate） Pressure-sensitive Adhesive

doi:10.19894/j.issn.1000-0518.220413

Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (6): 871-878.DOI: 10.19894/j.issn.1000-0518.220413

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Rheological Properties and Bonding Properties of Modified Poly（Propylene Carbonate） Pressure-sensitive Adhesive

Jia-Cheng ZHOU¹^,², Dong-Dong WANG¹^,², Yun-Bao GAO¹, Jing JIN¹(), Wei JIANG¹^,²()

^1.State Key Laboratory of Polymer Physics and Chemistry，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China
^2.University of Science and Technology of China，Hefei 230000，China

Received:2022-12-28 Accepted:2023-04-08 Published:2023-06-01 Online:2023-06-27
Contact: Jing JIN,Wei JIANG
About author:wjiang@ciac.ac.cn
jjin@ciac.ac.cn；
Supported by:
the Science and Technology Development Program of Jilin Province(20200501005GX);Changchun Science and Technology Development Program(21ZY07)

Abstract

Abstract:

Based on the demands for green manufacturing， energy conservation and environmental protection， the developing tendency of pressure-sensitive adhesive is focused on high performance， solvent-free， and biodegradability at home and abroad. The rheological and bonding properties of chlorosulfonation modified poly（propylene carbonate）（MPPC） are studied in this paper. The results show that the bonding properties and peeling strength of MPPC are strongly dependent on the number of average molecular mass. When the number average molecular mass of MPPC ranges from 7600 to 17500， the tensile lap-shear strength increases from （0.35±0.11） MPa to （3.78±0.33） MPa with the increase of the number average molecular mass of MPPC. The higher the number average molecular mass of MPPC， the higher the tensile lap-shear strength. At the same time， MPPC peel strength data also show the same trend， namely a high number of average molecular mass MPPC with high 180（°） peel strength， which can be applied to high-performance pressure-sensitive adhesive materials. The results of rheological data further prove that the energy storage modulus （G'） and loss modulus （G"） of a high number average molecular mass MPPC are higher than those of MPPC with a low number average molecular mass. This provides a theoretical basis for preparing biodegradable pressure-sensitive adhesives based on PPC.

Key words: Poly（propylene carbonate）, Pressure-sensitive adhesive, Rheological properties, Bonding properties

CLC Number:

O631

Jia-Cheng ZHOU, Dong-Dong WANG, Yun-Bao GAO, Jing JIN, Wei JIANG. Rheological Properties and Bonding Properties of Modified Poly（Propylene Carbonate） Pressure-sensitive Adhesive[J]. Chinese Journal of Applied Chemistry, 2023, 40(6): 871-878.

Figures/Tables 6

Table 1 Molecule mass and Tg of PPC and MPPC obtained from different chlorosulfonation reaction time （tc）

Sample	t_c /min	10^-4×M_n	10^-4×M_w	M_w/M_n	T_g/℃
PPC	-	11.42	42.43	3.69	38.3
MPPC-1	90	0.76	0.97	1.27	-25.6
MPPC-2	80	0.98	1.54	1.57	-21.2
MPPC-3	70	1.15	1.94	1.69	-18.7
MPPC-4	60	1.23	2.21	1.78	-13.4
MPPC-5	50	1.38	2.45	1.78	-7.4
MPPC-6	40	1.53	2.99	1.95	-2.9
MPPC-7	30	1.75	3.97	2.27	2.7

Fig.1 TGA （A） and DSC （B） curves of PPC and different number average molecular mass MPPC

Fig.2 G'（A）， G″（B） and tanδ（C） as a function of ω for different number average molecular mass MPPC

Fig.3 Viscoelastic windows for MPPC of different number average molecular mass at 25 ℃

Fig.4 Tensile lap-shear strength of PPC and MPPC at different number average molecular mass

Fig.5 180（°） Peel strength （A）， holding adhesion （B） and tack strength （C） of MPPC at different number average molecular mass

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Rheological Properties and Bonding Properties of Modified Poly（Propylene Carbonate） Pressure-sensitive Adhesive

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