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Technological method for synthesizing biologically degradable poly(succinic acid-co-polybutylene terephthalate) through organic guanidine catalysis

A process method and synthetic biology technology, which is applied in the field of synthesis process of biodegradable polymers, can solve the problems of low temperature and achieve the effects of low reaction temperature, low production energy consumption, and white color

Inactive Publication Date: 2018-02-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the above PBST 50-50 Synthesis process and product M w , T m Not high problem, the present invention provides a kind of organoguanidine catalyzed synthetic biodegradable PBST 50-50 process method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, add BDO 81.4kg, TA 100.0kg, SA71.1kg, creatine 17.1g, and zinc lactate 1.7g to the polymerization reactor, and then under the following polymerization conditions in turn: a.T 1-1 =175°C, P 1-1 =760torr,t 1-1 = 1.0h; b.T 1-2 =185°C,P 1-2 =500torr,t 1-2 =2.0h; c.T 1-3 =185°C, P 1-3 =10torr,t 1-3 =2.0h, carry out melt polycondensation reaction, synthesize and obtain M w 1.0×10 4 m-PBST 50-50 .

[0026] Second, the above m-PBST 50-50 Crushing and sieving, take the particles with a particle size of φ1.0mm and put them into the drum-type solid-phase polycondensation reactor, followed by the following polymerization conditions: a.T 2-1 =85°C,P 2-1 = 1.0 Torr, t 2-1 =1.5h; b.T 2-2 =115°C, P 2-2 = 1.0 Torr, t 2-2 =3.0h; c.T 2-3 =135°C,P 2-3 = 1.0 Torr, t 2-3 =6.0h; d.T 2-4 =155°C, P 2-4 = 1.0 Torr, t 2-4 =6.0h, carry out solid phase polycondensation reaction, obtain final product biodegradability PBST after the reaction finishes, product M w 1.00×1...

Embodiment 2

[0028] First, add BDO 130.2kg, TA 150.0kg, SA 106.6kg and guanidinoacetic acid 51.3g, zinc glycolate 7.7g in the polymerization reactor, then under the following polymerization reaction conditions successively: a.T 1-1 =180°C,P 1-1 =600torr,t 1-1 =2.0h; b.T 1-2 =190°C,P 1-2 =250torr,t 1-2 =3.0h; c.T1-3 =190°C,P 1-3 =5 torr,t 1-3 =3.0h, carry out melt polycondensation reaction, synthesize and obtain M w 2.0×10 4 m-PBST 50-50 .

[0029] Second, the above m-PBST 50-50 Crushing and sieving, take the particles with a particle size of φ1.5mm and put them into the drum-type solid-phase polycondensation reactor, followed by the following polymerization conditions: a.T 2-1 =90°C,P 2-1 = 0.9 Torr, t 2-1 =2.0h; b.T 2-2 =120°C,P 2-2 = 0.9 Torr, t 2-2 =4.0h; c.T 2-3 =140°C, P 2-3 = 0.9 Torr, t 2-3 =7.0h; d.T 2-4 =156°C, P 2-4 = 0.9 Torr, t 2-4 =7.0h, carry out solid phase polycondensation reaction, obtain final product biodegradability PBST after the reaction finishes...

Embodiment 3

[0031] First, add BDO 184.4kg, TA200.0kg, SA 142.2kg and creatine 102.6g, zinc acetate 20.5g in the polymerization reactor, then under the following polymerization reaction conditions successively: a.T 1-1 =185°C,P 1-1 =500torr,t 1-1 = 1.0h; b.T 1-2 =195°C, P 1-2 =100torr,t 1-2 =4.0h; c.T 1-3 =195°C, P 1-3 = 1 torr, t 1-3 =4.0h, carry out melting polycondensation reaction, synthesize and obtain M w 3.0×10 4 m-PBST 50-50 .

[0032] Second, the above m-PBST 50-50 Crushing and sieving, take the particles with a particle size of φ2.0mm and add them to the drum-type solid-phase polycondensation reactor, followed by the following polymerization conditions: a.T 2-1 =95°C, P 2-1 =0.7torr,t 2-1 =2.5h; b.T 2-2 =125°C,P 2-2 =0.7torr,t 2-2 =5.0h; c.T 2-3 =145°C, P 2-3 =0.7torr,t 2-3 =8.0h; d.T 2-4 =157°C,P 2-4 =0.7torr,t 2-4 =8.0h, carry out solid phase polycondensation reaction, obtain final product biodegradability PBST after the reaction finishes, product M w 1....

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Abstract

Provided is a technological method for synthesizing biologically degradable poly(succinic acid-co-polybutylene terephthalate) (PBST50-50) through organic guanidine catalysis. According to the technological method, a non-poisonous organic biomass compound is used as a main catalyst and non-poisonous zincate is used as a promoter to form a two-component high-activity catalysis system, succinic acid(SA), terephthalic acid (TA) and 1,4-diethylene glycol (BDO) are used as monomers, and the biodegradable PBST50-50 is synthesized through direct melting and condensation and then solid-phase polycondensation. The weight average molecular weight Mw of the PBST50-50 synthesized by adopting the method can be 1.0 * 105-1.2 * 105, Tm is 170 DEG C or above, and the product has a white color.

Description

technical field [0001] The invention belongs to the technical field of environment-friendly and biodegradable material synthesis, and in particular relates to a synthesis process method of biodegradable poly(succinic acid-co-butylene terephthalate). Background technique [0002] Aromatic polyester synthetic polymer materials, polyethylene terephthalate PET, polybutylene terephthalate PBT, etc., have excellent thermomechanical properties and low production costs, and have been widely used in the world It is used in the manufacture of fibers and other engineering plastics. However, PET-based aromatic polyesters are extremely resistant to microbial erosion in the environment and are difficult to degrade. Therefore, with the increasing emphasis on environmental protection in the world in recent years, the research on the modification of PET aromatic polyesters has attracted the attention of countries all over the world. One of the methods to fundamentally solve the environment...

Claims

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Application Information

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IPC IPC(8): C08G63/87C08G63/83C08G63/78C08G63/80C08G63/183
CPCC08G63/183C08G63/78C08G63/80C08G63/83C08G63/87
Inventor 李弘张全兴何文文李立衡黄伟江伟李爱民
Owner NANJING UNIV
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