CN117683174A - 阳离子型温度敏感性聚合物、合成方法及其应用 - Google Patents
阳离子型温度敏感性聚合物、合成方法及其应用 Download PDFInfo
- Publication number
- CN117683174A CN117683174A CN202311727398.4A CN202311727398A CN117683174A CN 117683174 A CN117683174 A CN 117683174A CN 202311727398 A CN202311727398 A CN 202311727398A CN 117683174 A CN117683174 A CN 117683174A
- Authority
- CN
- China
- Prior art keywords
- temperature
- sensitive polymer
- cationic
- dea
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 42
- 125000002091 cationic group Chemical group 0.000 title claims abstract description 23
- 238000001308 synthesis method Methods 0.000 title abstract description 6
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims abstract description 15
- 239000007764 o/w emulsion Substances 0.000 claims abstract description 8
- 239000000178 monomer Substances 0.000 claims description 40
- 238000006116 polymerization reaction Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 238000003786 synthesis reaction Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000002738 chelating agent Substances 0.000 claims description 5
- 229910021645 metal ion Inorganic materials 0.000 claims description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- 239000000084 colloidal system Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- UVRCNEIYXSRHNT-UHFFFAOYSA-N 3-ethylpent-2-enamide Chemical compound CCC(CC)=CC(N)=O UVRCNEIYXSRHNT-UHFFFAOYSA-N 0.000 claims 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 1
- YIOJGTBNHQAVBO-UHFFFAOYSA-N dimethyl-bis(prop-2-enyl)azanium Chemical compound C=CC[N+](C)(C)CC=C YIOJGTBNHQAVBO-UHFFFAOYSA-N 0.000 claims 1
- 238000000643 oven drying Methods 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010298 pulverizing process Methods 0.000 claims 1
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010189 synthetic method Methods 0.000 claims 1
- OVHHHVAVHBHXAK-UHFFFAOYSA-N n,n-diethylprop-2-enamide Chemical compound CCN(CC)C(=O)C=C OVHHHVAVHBHXAK-UHFFFAOYSA-N 0.000 abstract description 3
- 230000007704 transition Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 239000003921 oil Substances 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- 239000000017 hydrogel Substances 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001977 poly(N,N-diethylacrylamides) Polymers 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- LXEKPEMOWBOYRF-UHFFFAOYSA-N [2-[(1-azaniumyl-1-imino-2-methylpropan-2-yl)diazenyl]-2-methylpropanimidoyl]azanium;dichloride Chemical compound Cl.Cl.NC(=N)C(C)(C)N=NC(C)(C)C(N)=N LXEKPEMOWBOYRF-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012966 redox initiator Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 208000023445 Congenital pulmonary airway malformation Diseases 0.000 description 1
- 101000609947 Homo sapiens Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha Proteins 0.000 description 1
- 102100039177 Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha Human genes 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- KETWBQOXTBGBBN-UHFFFAOYSA-N hex-1-enylbenzene Chemical compound CCCCC=CC1=CC=CC=C1 KETWBQOXTBGBBN-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
- C08F226/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a single or double bond to nitrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
本发明公开了一种阳离子型温度敏感性聚合物、合成方法及其应用。所述的阳离子型温度敏感性聚合物的结构式为,其中m、n为自然数m,n≥2,由二甲基二烯丙基氯化铵和N,N‑二乙基丙烯酰胺共聚形成。本发明的阳离子型温度敏感性聚合物具有相对分子质量及相变温度可控的特点,对于水包油型乳化液展现出了优异的破乳性能,破乳率最高可达98.40%。
Description
技术领域
本发明属于高分子聚合物领域,涉及一种阳离子型温度敏感性聚合物、合成方法及其应用。
背景技术
N,N-二乙基丙烯酰胺(N,N--Diethylacrylamide,简称DEA)具有良好的温度响应性,近年来,国内外学者通过改变共聚单体、比例、温度、电荷量等因素对DEA进行改性,以扩大其应用范围,改善应用性能。
文献1(LiuHL,LiuMZ,JinSP.etal.Synthesisandcharacterizationoffastresponsive thermo-andpH-sensitivePoly[(N,N-diethylacrylamide)-co-(acrylicacid)]hydrogels[J].Polym.Int.,2008,57:1165-1173.)将丙烯酸(AA)与DEA共聚,制备了不同单体比例的水凝胶,通过药物释放实验证明AA上的阳离子基团使得该共聚物获得了良好的pH响应性,其LCST值由33℃改变为接近人体生理温度的37.5℃。由此证明,阳离子型单体的引入会明显提升聚合物的LCST值并赋予其pH响应性能,使其具有更广阔的应用前景。
文献2(陈俊.基于聚(N,N-二乙基丙烯酰胺)的温度和pH值敏感性水凝胶的合成及其性能研究[D].甘肃:兰州大学,2010.)在高分子电解质聚二烯丙基二甲基氯化铵(PDMDAAC)水溶液中,用自由基聚合法引发DEA聚合,得到了具有温度/pH值双重敏感性的PDMDAAC/PDEASemi-IPN水凝胶。溶胀行为研究表明,该凝胶具有快的去溶胀速率和优异的可逆刺激响应行为。
文献3(马超,朱倩倩,潘茗蕾,等.温敏型聚合物在稠油污水中的絮凝作用探讨[J].工业水处理,2017,37(5):50-53.)以温敏单体DEA、丙烯酰胺(AM)、正丁基苯乙烯(OBS)的共聚物PA作为稠油污水絮凝剂,在同等投加量条件下,PA的破乳效果远高于聚丙烯酰胺(CPAM),除油率最高可达80%以上。这是因为在55℃破乳温度下,PA发生了相变,由于分子链的团聚,其亲水性转变为疏水性,原油废水中的小颗粒油珠和固体物质被吸附包裹,在疏水基团的吸附下进一步结合形成较大粒径的油珠而被沉降。综上可知,温度敏感性聚合物在破乳领域具有优异的应用潜能。
发明内容
本发明提供一种阳离子型温度敏感性聚合物、合成方法及其应用。
本发明所述的阳离子型温度敏感性聚合物,是由二甲基二烯丙基氯化铵(DMDAAC)和N,N-二乙基丙烯酰胺(DEA)以摩尔比为3:7~7:3共聚形成的聚合物,特征黏度范围为0.79~3.85dL/g,其结构式如下:
其中m、n为自然数m,n≥2。
优选地,阳离子型温度敏感性聚合物的特征黏度范围为1.21~3.28dL/g。
上述阳离子型温度敏感性聚合物的合成方法,具体步骤如下:
将DMDAAC与DEA按摩尔比为3:7~7:3混合,依次加入金属离子螯合剂Na4EDTA溶液和水溶性引发剂溶液,最后加入蒸馏水调节单体质量分数为25.00%~74.00%,在氮气保护下,搅拌至混合均匀后,采用三步升温法,依次调节引发温度T1、聚合温度T2和熟化温度T3,保温聚合,冷却出料得到破乳剂胶体或凝胶,经精制、粉碎造粒、烘干,得到Poly(DMDAAC-co-DEA)干粉。
优选地,DMDAAC与DEA的摩尔比为5:5~7:3。
优选地,金属离子螯合剂Na4EDTA占总单体质量分数的0.002%~0.01%,更优选为0.002%~0.003%。
优选地,水溶性引发剂为摩尔比为1:1的过硫酸铵与亚硫酸氢钠组成的氧化还原体系(APS-NaHSO3)或偶氮二异丁基脒盐酸盐(V-50)。
优选地,水溶性引发剂占总单体质量的0.05%~0.18%,更优选为0.06%~0.10%。
优选地,引发温度T1为37.5~45℃,聚合温度T2为57.5~65℃,熟化温度T3为65~72℃,每个阶段各反应3h,总反应时间为9h。
优选地,烘干温度为80~100℃,烘干时间为6.0±0.5h,烘干方式为在流化床或真空干燥箱中烘干。
本发明还提供上述阳离子型温度敏感性聚合物作为水包油型乳化液破乳剂的应用。
优选地,水包油型乳化液为原油,破乳温度为阳离子型温度敏感性聚合物的LCST以上。
进一步地,阳离子型温度敏感性聚合物的LCST为35~60℃。
与现有技术相比,本发明具有以下优点:
本发明的阳离子型温度敏感性聚合物在结构上同时具有亲水、疏水两种类型单体,且具有相对分子质量较高、可控,合成简便等优点。阳离子型温度敏感性聚合物作为一种破乳剂,在破乳效果上优于单一的均聚破乳剂,另外在保证与市售破乳剂处理效果相近的条件下,本发明制备的破乳剂对破乳温度、破乳时间及投加量的要求更低。其中聚合物Poly(DMDAAC-co-DEA)(7:3)在投加量仅为0.005g/L的条件下,破乳效果高达98.4%。
附图说明
图1是不同比例获得的聚合物Poly(DMDAAC-co-DEA)及单体DMDAAC、DEA的核磁共振H1NMR图(溶剂为D2O)。
图2是不同比例获得的聚合物Poly(DMDAAC-co-DEA)及单体DMDAAC、DEA的FTIR图。
具体实施方式
下面结合具体实施例和附图对本发明作进一步详述。
实施例1
在聚合反应器中加入n(DMDAAC):n(DEA)=3:7的单体溶液,通氮气搅拌条件下,加入占总单体质量比为0.002%的Na4EDTA溶液、占总单体质量比为0.065%的APS-NaHSO3氧化还原引发剂溶液和蒸馏水,得到总单体质量分数为54.50%的反应液,依次升温至引发温度T1=40.0℃、聚合温度T2=60.0℃,熟化温度T3=65.0℃,每个阶段各反应3h,共反应9h,冷却出料得到[η]=1.21dL/g(0.1mol/LNaCl溶液)的共聚物产物,经过精制、粉碎造粒、80~100℃下流化床上烘干(6.0±0.5)h,得到聚合物Poly(DMDAAC-co-DEA)(3:7)。
实施例2
在聚合反应器中加入n(DMDAAC):n(DEA)=5:5的单体溶液,通氮气搅拌条件下,加入占总单体质量比为0.003%的Na4EDTA溶液、占总单体质量比为0.060%的V50引发剂溶液和蒸馏水,得到总单体质量分数为50.00%的反应液,依次升温至引发温度T1=40.0℃、聚合温度T2=60.0℃,熟化温度T3=67.5℃,每个阶段各反应3h,共反应9h,冷却出料得到[η]=2.94dL/g(0.1mol/LNaCl溶液)的共聚物产物,经过精制、粉碎造粒、80~100℃下流化床上烘干(6.0±0.5)h,得到聚合物Poly(DMDAAC-co-DEA)(5:5)。
实施例3
在聚合反应器中加入n(DMDAAC):n(DEA)=7:3的单体溶液,通氮气搅拌条件下,加入占总单体质量比为0.0025%的Na4EDTA溶液、占总单体质量比为0.18%的V50引发剂溶液和蒸馏水,得到总单体质量分数为72.00%的反应液,依次升温至引发温度T1=37.50℃、聚合温度T2=60.0℃,熟化温度T3=65.0℃,每个阶段各反应3h,共反应9h,冷却出料得到[η]=3.28dL/g(0.1mol/LNaCl溶液)的共聚物产物,经过精制、粉碎造粒、80~100℃下流化床上烘干(6.0±0.5)h,得到聚合物Poly(DMDAAC-co-DEA)(7:3)。
对比例1
在聚合反应器中加入n(DMDAAC):n(DEA)=1:9的单体溶液,通氮气搅拌条件下,加入占总单体质量比为0.002%的Na4EDTA溶液、占总单体质量比为0.050%的APS-NaHSO3氧化还原引发剂溶液和蒸馏水,得到总单体质量分数为25.00%的反应液,依次升温至引发温度T1=42.5℃、聚合温度T2=60.0℃,熟化温度T3=65.0℃,每个阶段各反应3h,共反应9h,冷却出料得到[η]=0.73dL/g(0.1mol/LNaCl溶液)的共聚物产物,经过精制、粉碎造粒、80~100℃下流化床上烘干(6.0±0.5)h,得到聚合物Poly(DMDAAC-co-DEA)(1:9)。
分别采用H1-NMR和FTIR对上述实施例1~3和对比例1制备的聚合物的结构进行确认,其结果如图1~2所示。
H1-NMR(400MHz,D2O):相比于单体谱图(e)和(f),聚合物谱图(a)、(b)和(c)在δ=3.05(1)和δ=3.92(2)左右处均产生了新的吸收峰,δ=3.05(1)是聚合物主链上-CH2-的H原子吸收峰,δ=3.92(2)左右是DMDAAC五元环-CH-上的H原子吸收峰;单体谱图(e)和(f)中δ=6.02(1)和δ=5.68(2)左右的峰为C=C双键上H原子的吸收峰,聚合物在该处的两个和C=C键相关的吸收峰明显减弱,仍存在一定含量可能由少量单体在精制过程中残留而引起得。δ=1.12(4)左右的峰为CH3CH2-基团中甲基上H原子吸收峰,谱图(d)、(c)、(b)、(a)在该处的吸收峰强度依次减弱,表明随着单体DEA含量的减少,Poly(DMDAAC-co-DEA)中相应DEA中的官能团含量也在减少。以上结果表明单体发生了聚合反应。
FTIR:3383cm-1处是水溶剂中O-H的伸缩振动吸收峰,说明单体和聚合物检测样品中均有水存在;3010cm-1左右的峰是酰胺基上N-H的伸缩振动吸收峰,2940cm-1、1454cm-1处的峰是C-H的伸缩振动峰,分别来自单体DMDAAC上的甲基以及单体DEA上的两个乙基。谱图(d)、(c)、(b)、(a)均在1272处产生了新的吸收峰,同时,与双键相关的C=C伸缩振动峰1635cm-1和=C-H面外弯曲振动峰915cm-1均在聚合物谱图中明显减弱或消失。以上结果表明单体已发生聚合。
对比例2
PDMDAAC,参考文献【贾旭.PDMDAAC合成工艺、聚合反应机理及结构与性质的关系[D].南京理工大学,2011.】合成,[η]=0.66dL/g。
对比例3
PDEA,参考文献【王焕霞、刘守信、房喻,等.聚(N,N-二乙基丙烯酰胺)的合成及盐对其水溶液温敏性的影响[J].物理化学学报,2009,25(09):1911-1915】合成,[η]=0.23dL/g。
对比例4
市售破乳剂BQ-05。
对比例5
本对比例与上述实施例相同,其区别在于加入的混合单体摩尔比为n(DMDAAC):n(DEA)=9:1,所得的Poly(DMDAAC-co-DEA)(9:1)不具备温度敏感的特性,[η]=4.35dL/g。
应用例
对上述实施例以及对比例得到的聚合物作为破乳剂进行破乳效果实验,依据石油天然气行业标准《SY/T5979—1993水包油乳状液破乳剂使用性能评定方法》配制O/W型含油废水乳状液,并以此作为实验用乳状液,参照石油天然气行业标准《SY/T5979—1993水包油乳状液破乳剂使用性能评定方法》,选取控制合适的破乳条件进行破乳效果测定及对比,具体实验结果如表1所示。
实验结果表明,实施例1~3合成的Poly(DMDAAC-co-DEA)作为一种水包油乳状液破乳剂,在破乳效果上优于单一的均聚破乳剂(对比例2和对比例3),另外在保证与市售破乳剂处理效果相近的条件下,本发明制备的Poly(DMDAAC-co-DEA)破乳剂对破乳温度、破乳时间及投加量的要求更低。在投加量仅为0.005g/L的条件下,破乳效果高达98.4%以上。具体结果如下:
1.破乳时间为5.0h的条件下,不同共聚比例对Poly(DMDAAC-co-DEA)破乳剂破乳性能的影响结果如表1所示:
表1不同共聚比例下破乳剂的最佳破乳效果对比(t=5h)
2.破乳时间为5.0h的条件下,不同破乳温度下Poly(DMDAAC-co-DEA)(7:3)破乳剂的破乳效果如表2所示:
表2不同破乳温度下的破乳效果(t=5h)
3.破乳温度为60℃的条件下,不同破乳时间下Poly(DMDAAC-co-DEA)(7:3)破乳剂的破乳效果如表3所示:
表3不同破乳时间下的破乳效果(T=60℃)
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应该以权利要求的保护范围为准。
Claims (10)
1.阳离子型温度敏感性聚合物,其特征在于,为由二甲基二烯丙基氯化铵和N,N-二乙基丙烯酰胺以摩尔比为3:7~7:3共聚形成的聚合物,特征黏度范围为0.79~3.85dL/g,其结构式如下:
,其中m、n为自然数m,n≥2。
2.根据权利要求1所述的阳离子型温度敏感性聚合物,其特征在于,特征黏度范围为1.21~3.28dL/g。
3.根据权利要求1或2所述的阳离子型温度敏感性聚合物的合成方法,其特征在于,具体步骤如下:
将二甲基二烯丙基氯化铵和N,N-二乙基丙烯酰胺按摩尔比为3:7~7:3混合,依次加入金属离子螯合剂Na4EDTA溶液和水溶性引发剂溶液,最后加入蒸馏水调节单体质量分数为25.00%~74.00%,在氮气保护下,搅拌至混合均匀后,采用三步升温法,依次调节引发温度T 1、聚合温度T 2和熟化温度T 3,保温聚合,冷却出料得到破乳剂胶体或凝胶,经精制、粉碎造粒、烘干,得到Poly(DMDAAC-co-DEA)干粉。
4.根据权利要求3所述的合成方法,其特征在于,DMDAAC与DEA的摩尔比为5:5~7:3。
5.根据权利要求3所述的合成方法,其特征在于,金属离子螯合剂Na4EDTA占总单体质量分数的0.002%~0.01%,水溶性引发剂占总单体质量的0.05%~0.18%。
6.根据权利要求3所述的合成方法,其特征在于,金属离子螯合剂Na4EDTA占总单体质量分数的0.002%~0.003%,水溶性引发剂占总单体质量的0.06%~0.10%。
7.根据权利要求3所述的合成方法,其特征在于,水溶性引发剂为摩尔比为1:1的过硫酸铵与亚硫酸氢钠组成的氧化还原体系或偶氮二异丁基脒盐酸盐。
8. 根据权利要求3所述的合成方法,其特征在于,引发温度T 1为37.5~45℃,聚合温度T 2为57.5~65℃,熟化温度T 3为65~72℃,每个阶段各反应3 h,总反应时间为9 h;烘干温度为80~100℃,烘干时间为6.0±0.5h,烘干方式为在流化床或真空干燥箱中烘干。
9.根据权利要求1或2所述的阳离子型温度敏感性聚合物作为水包油型乳化液破乳剂的应用。
10.根据权利要求9所述的应用,其特征在于,水包油型乳化液为原油,破乳温度为阳离子型温度敏感性聚合物的LCST以上,阳离子型温度敏感性聚合物的LCST为35~60℃。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311727398.4A CN117683174A (zh) | 2023-12-14 | 2023-12-14 | 阳离子型温度敏感性聚合物、合成方法及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311727398.4A CN117683174A (zh) | 2023-12-14 | 2023-12-14 | 阳离子型温度敏感性聚合物、合成方法及其应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN117683174A true CN117683174A (zh) | 2024-03-12 |
Family
ID=90136776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202311727398.4A Pending CN117683174A (zh) | 2023-12-14 | 2023-12-14 | 阳离子型温度敏感性聚合物、合成方法及其应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN117683174A (zh) |
-
2023
- 2023-12-14 CN CN202311727398.4A patent/CN117683174A/zh active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Wu et al. | Microwave assisted preparation and characterization of a chitosan based flocculant for the application and evaluation of sludge flocculation and dewatering | |
Chen et al. | Synthesis of linear amphiphilic tetrablock quaterpolymers with dual stimulus response through the combination of ATRP and RAFT by a click chemistry site transformation approach | |
EP0528409A1 (en) | Cationic polymer flocculating agents | |
JP2013215708A (ja) | 両性水溶性高分子凝集剤およびそれを用いる汚泥の脱水方法 | |
EP3298051A1 (en) | Copolymers of bicyclic (meth)acrylate and alkyl (meth)acrylate and their use as rheology modifiers in fuels | |
Suresha et al. | Flocculation of kaolin from aqueous suspension using low dosages of acrylamide‐based cationic flocculants | |
CN110283272B (zh) | 一种含苯环二元共聚物的应用方法 | |
Audureau et al. | Poly (N-cyanoethylacrylamide), a new thermoresponsive homopolymer presenting both LCST and UCST behavior in water | |
KR20220006535A (ko) | 점성 조성물 | |
Hu et al. | Synthesis of well‐defined glycoconjugate polyacrylamides via preactivated polymers prepared by ATRP | |
CN117683174A (zh) | 阳离子型温度敏感性聚合物、合成方法及其应用 | |
JP4933244B2 (ja) | 水溶性高分子の製造方法 | |
EP3805164A1 (en) | Sludge dehydration agent and sludge dehydration method | |
CN106432332A (zh) | 一种含磷氮丙烯酸酯及其共聚物核壳粒子的制备方法 | |
Zhang et al. | One-pot RAFT synthesis of core cross-linked star polymers of polyPEGMA in water by sequential homogeneous and heterogeneous polymerizations | |
CN116284565B (zh) | 一种用于污泥脱水的阳离子聚合物及其制备方法 | |
CN109021153A (zh) | 一种两步法制备速溶型阳离子高分子量聚丙烯酰胺的方法 | |
Kabiri et al. | Minimization of residual monomer content of superabsorbent hydrogels via alteration of initiating system | |
JP4018473B2 (ja) | 粉末からなる架橋性イオン性水溶性高分子 | |
Liu et al. | Synthesis of cationic polyacrylamide by aqueous two‐phase polymerization in poly (ethylene glycol) chloride solution | |
JP5967705B2 (ja) | 凝集処理剤およびそれを用いた汚泥脱水方法 | |
JP2017506693A (ja) | 構造化ブロック共重合体 | |
JP3714612B2 (ja) | 汚泥脱水方法 | |
Nandi et al. | Effects of main-chain and chain-ends on the organogelation of stearoyl appended pendant valine based polymers | |
CN108424490B (zh) | 一种丙烯酰胺共聚物及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |