CN104479081B - A kind of method by the modified polypropylene carbonate of reactive extrursion - Google Patents
A kind of method by the modified polypropylene carbonate of reactive extrursion Download PDFInfo
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Abstract
The present invention is a kind of preparation method by the modified polypropylene carbonate of reactive extrursion, comprises the following steps：The first step：60 ~ 150oUnder C, the stirring of 30 ~ 50r/min rotating speeds, banburying mixing in banbury after PPC and the anhydride mix homogeneously containing unsaturated bond, will be disposably added to, after 10 ~ 30min of reaction, have both obtained anhydride end-blocking PPC polymer；Second step：It is disposable after anhydride end-blocking PPC polymer, grafted monomers and radical initiator mix homogeneously that upper step is obtained to add in banbury, 60 150oUnder C, the stirring of 30 ~ 50r/min rotating speeds, graft reaction is carried out, after 10 ~ 30min, product is obtained.The present invention prepare containing polypropylene carbonate（PPC）Graft copolymer glass transition temperature and thermal weight loss temperature are all improved, and glass transition temperature improves 6 ~ 10oC, thermal weight loss temperature have also been correspondingly improved 70 ~ 80oC, solvent resistance be improved significantly.
Description
Technical field：
The present invention relates to it is a kind of by modified polypropylene carbonate of reactive extrursion and preparation method thereof, containing polypropylene carbonate
The heat stability of graft copolymer, glass transition temperature and dissolubility are improved, and belong to polymer glycerol polymerization field.
Background technology：
Carbon dioxide (CO2) biodegradable polypropylene carbonate can be obtained with expoxy propane (PO) combined polymerization
(PPC), can use as degradation plastic, be the environment-friendly material of the great development prospect of a class.But as which is non-
Crystal structure, Chain Flexibility is big and interaction force is little so that its glass transition temperature (Tg) is low, and mechanical property is poor, pole
The earth limits range of application.
In order to improve the performance of PPC, the purpose of application can be reached, and researcher has done substantial amounts of work.Conventional at present
Mode has by adding Third monomer to participate in copolyreaction to carry out chemical modification, this method can with the structure of polymer chain,
So as to regulate and control its performance, but this can often cause polyreaction difficult；Another method is exactly to be changed by melt blending
Property.It is a kind of more economic, environmental protection and efficient method that melt blending is modified, can both save polymer point during solution reaction
From with step and the expense such as solvent recovery, reduce environmental pollution；Can carry out in ready-made equipment such as flow graph, extruder again,
Production efficiency is high, therefore melt blending is modified and obtains the concern of people in recent years.For example, Pang et al. (J Appl Polym
Sci,2008,107:2854) extended with poly (propylene carbonate) (PPC) simple blend with poly butylene succinate (PBS)
The good PPC/PBC composites of property, compared with PPC, the thermal weight loss temperature of PPC/PBC composites improves 30～60 DEG C.It is rich
Dew it is auspicious et al. (plastics industry, 2006,34 (11):14～16) completely biological degradation polylactic acid is prepared for using mechanical blending method
(PLA)/PPC alloy materials, the addition of PPC impart the good toughness of system.Meng et al. (Polym.Eng.Sci., 2007,
47：174～180) with ethylene-vinyl alcohol copolymer (EVOH) and PPC simple melt blendings at 170 DEG C, find adding for EVOH
Enter to significantly improve 5% weightless temperature and maximum heat weight loss rate temperature of PPC.Ge et al. (Polym.Eng.Sci., 2004,
44：2134～2140) with unmodified cheap corn starch and PPC blending and modifyings, develop a kind of degradable, excellent with price
The good composite of gesture, mechanical property.It is all simple and mechanical blending that above PPC is modified, without chemical action.
And we first carry out being blended with PPC with anhydride and block the PPC for preparing end-blocking, then with by reactive extrursion grafting list
Body is carried out being grafted and then obtains graft copolymer containing polypropylene carbonate to the PPC for blocking, so prepared polymer with it is unmodified
Copolymer compare, its solvent resistance, thermostability and its mechanical property all make moderate progress, and have widened its range of application.Using anti-
Should extrude carries out the modified of polymer, simple to operate, and easily, its development prospect is very wide, causes the pole of people for post processing
Big interest.
The content of the invention：
The purpose of the present invention be further improve polypropylene carbonate material glass transition temperature and heat stability and
Improve the solvent resistance and mechanical property of polymer.The invention provides a kind of preparation containing polypropylene carbonate graft copolymer
Method.The method is blocked to PPC with the anhydride containing unsaturated bond first, then in the presence of radical initiator again
Mix with grafted monomers banburying.The solvent resistance of polymer is obtained so, thermostability and its mechanical property are all improved, widened
Its range of application.The technology has process is simple, pollutes little, is easy to the advantage of large-scale production.
The technical scheme is that：
A kind of method by the modified polypropylene carbonate of reactive extrursion, comprises the following steps:
The first step：
Under 60～150 DEG C, the stirring of 30～50r/min rotating speeds, after PPC and the anhydride mix homogeneously containing unsaturated bond
Disposably being added in banbury carries out banburying mixing, after 10～30min of reaction, has both obtained anhydride end-blocking PPC polymer；
Described material proportion is mass ratio PPC：Anhydride=100 containing unsaturated bond：0.1～10
Second step：
It is disposable after anhydride end-blocking PPC polymer, grafted monomers and radical initiator mix homogeneously that upper step is obtained
Add in banbury, under 60～150 DEG C, the stirring of 30～50r/min rotating speeds, carry out graft reaction, after 10～30min, both
Containing polypropylene carbonate (PPC) graft copolymer；Wherein, described material proportion is quality than PPC after anhydride end-blocking：Grafting is single
Body：Initiator=100：0.1～50：0.001～10；Described grafted monomers are (methyl) acrylic ester monomer or vinyl
Class monomer.
The anhydride containing unsaturated bond in the described first step can be：Endo- carbic anhydrides, exo- norborneols
Enedioic acid acid anhydride, Isosorbide-5-Nitrae, 5,6,7,7- chlordene -5- norborene -2,3- dicarboxylic anhydrides, maleic anhydride, dimethyl maleic anhydride, clothing health
Anhydride, chlorendic anhydride, citraconic anhydride, cinnamic anhydride, THPA, cis-aconitic anhydride, 2,3- dichloromaleic anhydrides, 3,6- oxygen
Bridge -1,2,3,6- tetrabydrophthalic anhydrides, tetrachlorophthalic tetrachlorophthalic anhydrid, 4,5- bis- chloro-phthalic anhydrides, 1- cyclopentenes -1,
2- dicarboxylic anhydrides, methacrylic anhydride, one or more in isatoic anhydride and phthalic anhydride.
Described initiator is peroxide radical polymerization initiator, azo type free radical polymerization initiator.
Reaction temperature in described second step in banbury is preferably 80～120 DEG C.
Described PPC molecular weight is 5～280,000, and molecular weight distribution is 2～15.
The peroxide radical polymerization initiator is：Benzoyl peroxide, di-tert-butyl peroxide, isopropylbenzene
Hydrogen peroxide, lauroyl peroxide, tert butyl peroxy benzoate, peroxidating titanium dioxide acid (double -2- benzene oxygen ethyl esters), mistake
Aoxidize two carbonic acid two (2- diethyl acetamidomalonates), di-isopropyl peroxydicarbonate, methyl ethyl ketone peroxide or Ammonium persulfate. or persulfuric acid
Potassium.
The azo type free radical polymerization initiator is：Azodiisobutyronitrile, 2,2'-Azobis(2,4-dimethylvaleronitrile), diphenyl diimide, azo two
Formic acid di tert butyl carbonate, diethyl azodiformate, AMBN, azo isobutyl cyano group Methanamide, azo bicyclo- ethyl first
Nitrile, azo-bis-iso-dimethyl, azo-bis-isobutyrate hydrochloride, azo dicyclohexyl formonitrile HCN hydrochlorate or azo dicyano
Valeric acid.
Described (methyl) esters of acrylic acid is：(methyl) acrylic acid methyl ester., (methyl) ethyl acrylate, (methyl) propylene
Tert-butyl acrylate, (methyl) n-butyl acrylate, (methyl) Isobutyl 2-propenoate, (methyl) glycidyl acrylate, 1,4- fourths
Glycol two (methyl) acrylate, diethylene glycol two (methyl) acrylate, Polyethylene Glycol two (methyl) esters of acrylic acid (200,
400 or 600), trimethylolpropane tris (methyl) acrylate, two trimethylolpropane four (methyl) acrylate, poly- two season
Penta tetrol five (methyl) acrylate, 1,6-HD two (methyl) acrylate, tripropylene glycol two (methyl) acrylate, two
Propylene Glycol two (methyl) acrylate, (methyl) dodecyl acrylate, (methyl) Isooctyl acrylate monomer, ethylene glycol bisthioglycolate (methyl) third
Olefin(e) acid ester, tetramethylolmethane three (methyl) acrylate, (methyl) 2-(Acryloyloxy)ethanol, (methyl) isobornyl acrylate, the third oxygen
Base glycerol three (methyl) acrylate, tetrahydrofurfuryl alcohol (methyl) acrylate and O-phthalic acid diethylene glycol two (methyl) propylene
One or more in acid esters.
Described vinyl monomer is：NVP, styrene, p-methylstyrene, divinylbenzene,
N- caprolactams, acrylonitrile, vinyl methyl ether, α-methyl styrene, vinyl acetate, 2- vinylpyridines, 4-
One or more in vinylpyridine, N- VCzs, N- ethylene methyl amide, N- ethylene ethyls amide and vinyl chloride.
Beneficial effects of the present invention are：Graft copolymer vitrification containing polypropylene carbonate (PPC) prepared by the present invention
Transition temperature and thermal weight loss temperature are all improved, and glass transition temperature improves 6～10 DEG C, and thermal weight loss temperature is also correspondingly improved
70～80 DEG C.Dissolubility also can be dissolved in dichloromethane, tetrahydrofuran, ethyl acetate, acetone and other organic solvent by pure PPC,
Be changed into the insoluble or indissoluble of graft copolymer, solvent resistance be improved significantly.
Specific embodiment：
The present invention is further described with reference to case is embodied as, but protection scope of the present invention is not limited only to this.
Experimental technique described in the following example, is conventional method without specified otherwise.The reagent and material can be from
Commercial sources are obtained.Wherein, PPC used is well known materials, can be according to a kind of patent " binary copolymer polycarbonate foam material
Material, application number：2011110343554.8 " be obtained, or buy.It is public by Inner Mongolia Autonomous Region Meng Xi groups used by the present embodiment
Department provides, and molecular weight is 100,000, and molecular weight distribution is 2.4, and glass ring transition temperature is 29 DEG C, heat during PPC mass losses 5%
Weightless temperature is 197 DEG C.
Case study on implementation 1：
The first step:PPC is blocked with maleic anhydride.
Under 120 DEG C, the stirring of 30r/min rotating speeds, will disposably be added to after PPC60g and maleic anhydride 1g mix homogeneously
Banburying mixing is carried out in banbury, after reaction 10min, maleic anhydride end-blocking PPC polymer had both been obtained.
Second step：Take PPC and NVP (NVP) and radical initiator azo after maleic anhydride end-blocking
Bis-isobutyronitrile (AIBN) is put into banbury and carries out graft reaction in case of heating.
At 80 DEG C, under the stirring of 30r/min rotating speeds, the PPC55g and NVP after maleic anhydride is blocked
(NVP) being disposably added in banbury after 5g and radical initiator (AIBN) 0.275g mix homogeneously carries out graft reaction,
After mixing 15min, horse was both obtained and had contained polyvinylpyrrolidone (PVP) and polypropylene carbonate (PPC) graft copolymer.
Case study on implementation 2：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply radical initiator is not AIBN but two different eyeball in heptan (AIVN) of azo.
Case study on implementation 3：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply radical initiator is not AIBN but azo diisoamyl eyeball (AMBN).
Case study on implementation 4：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply radical initiator is not AIBN but benzoyl peroxide (BPO).
Case study on implementation 5：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply radical initiator is not AIBN but di-tert-butyl peroxide
(DTBP)。
Case study on implementation 6：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply radical initiator is not AIBN but isopropyl benzene hydroperoxide (CHP).
Case study on implementation 7：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but itaconic anhydride (IA)
Case study on implementation 8：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but inner mold-carbic anhydride
(endo-NA)
Case study on implementation 9：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but external form-carbic anhydride
(exo-NA)
Case study on implementation 10：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but chlorendic anhydride
Case study on implementation 11：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but citraconic anhydride
Case study on implementation 12：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but cinnamic anhydride.
Case study on implementation 13：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply anhydride is not maleic anhydride (MA) but cis-aconitic anhydride.
Case study on implementation 14：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but itaconic anhydride (IA)
Case study on implementation 15：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but inner mold-carbic anhydride
(endo-NA)
Case study on implementation 16：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but external form-carbic anhydride
(exo-NA)
Case study on implementation 17：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but chlorendic anhydride
Case study on implementation 18：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but citraconic anhydride
Case study on implementation 19：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but cinnamic anhydride.
Case study on implementation 20：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 2, and simply anhydride is not maleic anhydride (MA) but cis-aconitic anhydride.
Case study on implementation 21：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but itaconic anhydride (IA)
Case study on implementation 22：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but inner mold-carbic anhydride
(endo-NA)
Case study on implementation 23：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but external form-carbic anhydride
(exo-NA)
Case study on implementation 24：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but chlorendic anhydride
Case study on implementation 25：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but citraconic anhydride
Case study on implementation 26：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but cinnamic anhydride.
Case study on implementation 27：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 4, and simply anhydride is not maleic anhydride (MA) but cis-aconitic anhydride.
Case study on implementation 28：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC60g, maleic anhydride its 0.1g, other materials
Mass conservation.
Case study on implementation 29：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC60g, maleic anhydride its 10g, other materials
Mass conservation.
Case study on implementation 30：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC59g, the NVP1g of maleic anhydride end-blocking, its
Its material mass is constant.
Case study on implementation 31：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC45g, the NVP15g of maleic anhydride end-blocking, its
Its material mass is constant.
Case study on implementation 32：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC55g, the NVP5g of maleic anhydride end-blocking,
AIBN0.005, other materials mass conservation.
Case study on implementation 33：
PPC banburyings after carrying out blocking embodiment and NVP and anhydride end-blocking to PPC with anhydride are mixed with graft copolymerization
The embodiment of thing is identical with case study on implementation 1, and simply material proportion is different, PPC55g, the NVP5g of maleic anhydride end-blocking,
AIBN0.55g, other materials mass conservation.
Case study on implementation 34：
PPC banburyings after carrying out blocking embodiment and tert-butyl acrylate (BA) and anhydride end-blocking to PPC with anhydride are mixed
The embodiment that conjunction prepares graft copolymer is identical with case study on implementation 1, and simply grafted monomers are not NVP but BA.
Case study on implementation 35：
Carry out end-blocking embodiment and acrylonitrile (AN) to be mixed with the PPC banburyings after anhydride end-blocking with anhydride to PPC
The embodiment of graft copolymer is identical with case study on implementation 1, and simply grafted monomers are not NVP but AN.
Case study on implementation 36：
PPC is carried out blocking embodiment and mixed with the PPC banburyings after N- ethylene ethyl acyl (NVA) anhydride end-blocking with anhydride
The embodiment that conjunction prepares graft copolymer is identical with case study on implementation 1, and simply grafted monomers are not NVP but NVA.
Case study on implementation 37：
PPC banburyings after carrying out blocking embodiment and vinyl methyl ether (MVE) and anhydride end-blocking to PPC with anhydride are mixed
The embodiment that conjunction prepares graft copolymer is identical with case study on implementation 1, and simply grafted monomers are not NVP but MVE.
Case study on implementation 1～37 is containing polypropylene carbonate (PPC) graft copolymer preparation method, its degree of cross linking, glass
Change transition temperature and heat decomposition temperature is shown in Table 1.
Table 1
Dissolubility test after case study on implementation 1～37 is grafted is shown in Table 2
Table 2
Note：√-dissolving, ×-insoluble.
Test condition：Take 0.5g to add in 100ml conical flasks containing polypropylene carbonate (PPC) graft copolymer, add
More than 100ml test solvents, observe state of polymer, are to dissolve or insoluble.
Unaccomplished matter of the present invention is known technology.
Claims (8)
1. a kind of method by the modified polypropylene carbonate of reactive extrursion, it is characterized by comprising the following steps：
The first step：
60 ~ 150oUnder C, the stirring of 30 ~ 50r/min rotating speeds, will be disposable after PPC and the anhydride mix homogeneously containing unsaturated bond
Being added in banbury carries out banburying mixing, after 10 ~ 30min of reaction, obtains final product anhydride end-blocking PPC polymer；
Described material proportion is mass ratio PPC：Anhydride=100 containing unsaturated bond：0.1~10；
Second step：
Disposably add after anhydride end-blocking PPC polymer, grafted monomers and radical initiator mix homogeneously that upper step is obtained
In banbury, 60 ~ 150oUnder C, the stirring of 30 ~ 50r/min rotating speeds, graft reaction is carried out, after 10 ~ 30min, is obtained final product containing poly- trimethylene
Carbonic ester（PPC）Graft copolymer；Wherein, described material proportion is quality than PPC after anhydride end-blocking：Grafted monomers：Cause
Agent=100：0.1~50 ：0.001~10；Described grafted monomers are（Methyl）Acrylic ester monomer or vinyl monomer；
The anhydride containing unsaturated bond in the described first step is：Endo- carbic anhydrides, exo- carbic acids
Acid anhydride, Isosorbide-5-Nitrae, 5,6,7,7- chlordene -5- norborene -2,3- dicarboxylic anhydrides, maleic anhydride, dimethyl maleic anhydride, itaconic anhydride, chlorine
Bacterium anhydride, citraconic anhydride, cinnamic anhydride, THPA, cis-aconitic anhydride, 2,3- dichloromaleic anhydrides, 3,6- oxygen bridge -1,
2,3,6- tetrabydrophthalic anhydrides, tetrachlorophthalic tetrachlorophthalic anhydrid, 4,5- bis- chloro-phthalic anhydrides, 1- cyclopentenes -1,2-
Dicarboxylic anhydride, methacrylic anhydride, one or more in isatoic anhydride and phthalic anhydride.
2. as claimed in claim 1 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by described initiation
Agent is peroxide radical polymerization initiator, azo type free radical polymerization initiator.
3. as claimed in claim 1 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by described second
Reaction temperature in step in banbury is 80 ~ 120 oC。
4. as claimed in claim 1 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by described PPC point
Son amount is 5 ~ 280,000, and molecular weight distribution is 2 ~ 15.
5. as claimed in claim 2 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by the peroxidating
Species radical polymerization initiator is：Benzoyl peroxide, di-tert-butyl peroxide, isopropyl benzene hydroperoxide, the peroxidating moon
Osmanthus acyl, tert butyl peroxy benzoate, the acid of peroxidating titanium dioxide（Double -2- benzene oxygen ethyl esters）, peroxy dicarbonate two（2- second
Base ethyl ester）, di-isopropyl peroxydicarbonate, methyl ethyl ketone peroxide or Ammonium persulfate. or potassium peroxydisulfate.
6. as claimed in claim 2 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by the azo
Radical polymerization initiator is：Azodiisobutyronitrile, 2,2'-Azobis(2,4-dimethylvaleronitrile), diphenyl diimide, tert-butyl azodicarboxylate, azo two
Formic acid diethylester, AMBN, azo isobutyl cyano group Methanamide, azo-bis-iso-dimethyl, two 2,2-Dimethylaziridine salt of azo
Hydrochlorate, azo dicyclohexyl formonitrile HCN hydrochlorate or azo dicyano valeric acid.
7. as claimed in claim 1 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by described（First
Base）Esters of acrylic acid is：（Methyl）Acrylic acid methyl ester.,（Methyl）Ethyl acrylate,（Methyl）Tert-butyl acrylate,（Methyl）Third
Olefin(e) acid N-butyl,（Methyl）Isobutyl 2-propenoate,（Methyl）Glycidyl acrylate, 1,4- butanediols two（Methyl）Acrylic acid
Ester, diethylene glycol two（Methyl）Acrylate, Polyethylene Glycol two（Methyl）Esters of acrylic acid, trimethylolpropane tris（Methyl）Third
Olefin(e) acid ester, two trimethylolpropanes four（Methyl）Acrylate, dipentaerythrite five（Methyl）Acrylate, 1,6-HD
Two（Methyl）Acrylate, tripropylene glycol two（Methyl）Acrylate, dipropylene glycol two（Methyl）Acrylate,（Methyl）Propylene
Dodecyl gallate,（Methyl）Isooctyl acrylate monomer, ethylene glycol bisthioglycolate（Methyl）Acrylate, tetramethylolmethane three（Methyl）Acrylate,
（Methyl）2-(Acryloyloxy)ethanol,（Methyl）Isobornyl acrylate, propoxylated glycerol three（Methyl）Acrylate, tetrahydrofurfuryl alcohol
（Methyl）Acrylate and O-phthalic acid diethylene glycol two（Methyl）One or more in acrylate.
8. as claimed in claim 1 by the method for the modified polypropylene carbonate of reactive extrursion, it is characterized by described ethylene
Base class monomer is：NVP, styrene, p-methylstyrene, divinylbenzene, N- caprolactams,
Acrylonitrile, vinyl methyl ether, α-methyl styrene, vinyl acetate, 2- vinylpyridines, 4-vinylpridine, N- ethylene
One or more in base carbazole and vinyl chloride.
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| CN105061971A (en) * | 2015-06-16 | 2015-11-18 | 华南理工大学 | Method for preparing completely-degradable composite material through acid anhydride and microcrystalline cellulose synergetic modification on poly(propylene carbonate) |
| CN106010065A (en) * | 2016-05-17 | 2016-10-12 | 江苏博开达工业化住宅制造有限公司 | Surface treatment method for connecting device for modular buildings |
| CN110283312B (en) * | 2018-12-13 | 2021-12-28 | 杭州师范大学 | Polylactam in-situ modified polypropylene carbonate and preparation method thereof |
| CN109703143B (en) * | 2018-12-20 | 2020-11-10 | 汕头经济特区雄伟塑料包装材料有限公司 | Stretch-proof degradable barrier plastic packaging film and preparation method thereof |
| CN110628071B (en) * | 2019-09-25 | 2022-04-29 | 嘉兴学院 | Antibacterial degradable polymer and preparation method and application thereof |
| CN113604020B (en) * | 2021-09-09 | 2022-06-14 | 福州大学 | Preparation method of high-toughness polylactic acid |
| CN114545579B (en) * | 2022-04-02 | 2024-05-17 | 西安西古光通信有限公司 | Fireproof flame-retardant optical cable and preparation method thereof |
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