Bio-based compatilizer, preparation method and application thereof

A compatibilizer and bio-based technology, which is applied in the field of bio-based compatibilizer preparation, can solve problems such as the influence of hydrogen bond force by ambient temperature, easy migration or precipitation of phenolic compounds, and difficulty in controlling the degree of cross-linking

CN101717497AInactive Publication Date: 2010-06-02NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-06-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bio-based compatilizer, a preparation method and the application thereof. The preparation method comprises the following steps of: respectively alcohol depolymerization on poly3-hydroxy-butanoic acid ester (PHB), poly3-hydroxy-butanoic acid ester-3- hydroxyvalerate (PHBV), polylactic acid (PLA) and polybutylene succinate (PBS) to obtain 4 alcohol depolymerized products; and then reactively blending more than 2 products, certain amount of isocyanate and antioxidant for reacting to obtain different bio-based compatilizers. 2-20 parts of compatilizers are added into 10 parts of bio-based resin to prepare a composite material, which obviously improves the compatibility of system interface, greatly improves the overall properties and widens the application link of the bio-based resin. The composite material can be widely applied to the production or consume fields of automobile trims, stationery products, traffic road blocks, sport products, food bags, refuge bags, disposable table cloth, outdoor flower pots, lunch boxes, knives and forks and the like.
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Description

technical field

[0001] The invention relates to a preparation technology of a bio-based compatibilizer, in particular to a preparation method and application of a compatibilizer for improving the compatibility between bio-based resin materials. Background technique

[0002] Poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxybutyrate-3-hydroxyvalerate) (PHBV) are both bio-based resin materials produced by fermentation engineering technology. Its complete biodegradability, good biocompatibility, and high barrier properties make it widely used in medical materials (sutures, bone nails), film materials (mulch, shopping bags, compost bags), disposable tableware, packaging Materials, stationery and other aspects have a wide range of application prospects. However, the internal structure shows defects such as brittleness and easy fracture in performance, which greatly restricts the popularization and application of PHB and PHBV. Although high 3-hydroxyvalerate (HV) content (> 20m...

Examples

Embodiment 1

[0082] Embodiment 1: the alcohol depolymerization of PHB

[0083] Weigh 50.0-1000.0g PHB resin (weight average molecular weight: 90,000), 0.5-8.0g p-toluenesulfonic acid, measure 0.5-5L ethylene glycol, pour the above materials into a three-necked flask or a reaction kettle, and nitrogen Protect. Heating in an oil bath with the temperature controlled at 170°C, stirring and reacting for 10 to 70 minutes, cooling at room temperature, and then using a sand core funnel to suction filter the degradation product (the filtrate can be recycled and reused), rinse with cold absolute ethanol several times, and put Vacuum-dry in a vacuum oven at 60°C for 6 hours to obtain white granular products with different molecular weights. Then take PHB with different weight average molecular weights (50,000, 80,000 and 140,000) to repeat the above test, and obtain the data in Table 1 below.

[0084] Table 1 The weight-average molecular weight (Mw) of phb in different reaction times

[0085]

Embodiment 2

[0086] Example 2: Alcohol depolymerization of PHBV

[0087] Weigh 50.0-1000.0g PHBV resin (weight average molecular weight is 120,000, HV% is 5%), 0.5-6.0g p-toluenesulfonic acid, measure 0.5-5L ethanol, pour the above materials into a three-necked flask or a reaction kettle , Nitrogen protection throughout the reaction. Heating in an oil bath with the temperature controlled at 175°C, stirring and reacting for 10 to 70 minutes, then cooling at room temperature, and then using a sand core funnel to suction filter the degradation product (the filtrate can be recycled and reused), rinse it with cold absolute ethanol several times, and put Vacuum-dry in a vacuum oven at 60°C for 6 hours to obtain white granular products with different molecular weights. Then take PHBV with different weight-average molecular weights (60,000, 90,000 and 150,000, HV% are 12%, 20% and 8% respectively) to repeat the above test, and obtain the following data in Table 2.

[0088] The weight-average mol...

Embodiment 3

[0090] Embodiment 3: the alcohol depolymerization of PLA

[0091]Weigh 50.0-1000.0g PLA resin (weight average molecular weight is 40,000, L% is 45%), 1.2-8.0g p-toluenesulfonic acid, measure 0.5-5L isopropanol, pour the above materials into a three-necked flask or react In the kettle, nitrogen protection was used throughout the reaction. Heating in an oil bath with the temperature controlled at 190°C, stirring and reacting for 10 to 70 minutes, cooling at room temperature, and then suction filtering the degradation product with a sand core funnel (the filtrate can be recycled and reused), rinsed several times with cold absolute ethanol, and put Vacuum-dry in a vacuum oven at 60°C for 6 hours to obtain white granular products with different molecular weights. Then take PLA with different weight-average molecular weights (60,000, 80,000 and 90,000, and the L% is 98%, 30% and 66% respectively) and repeat the above test to obtain the data in Table 3 below.

[0092] The weight-av...