CN112521605A - 基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺及其制备方法 - Google Patents
基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺及其制备方法 Download PDFInfo
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- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1067—Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
本发明公开了一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺及其制备方法,该聚酰亚胺由一种或两种含卤原子取代的二氨基三蝶烯与一种或两种四羧酸二酐聚合而成的共聚物,或由一种或两种含卤原子取代的二氨基三蝶烯衍生物与一种或两种四羧酸二酐聚合而成的共聚物;共聚物的聚合度取值范围为1~10000;该聚酰亚胺具有优异的气体分离性能,其制备成膜后可作为气体分离薄膜在沼气分离应用中能够有效从CH4和CO2的气体混合物中分离出CH4;由该种聚合物制备的膜材料可以在气体分离领域中有巨大的应用价值。例如,可以从空气中分别分理处N2和O2;在天然气的纯化过程中除去CO2,得到高纯度的CH4,在合成氨领域用于H2的回收。
Description
技术领域
本发明涉及气体分离膜技术领域,特别涉及一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺及其制备方法。
背景技术
分离工业在现代社会工业发展过程中扮演着越来越重要的角色,广泛应用于化工、能源及材料领域。膜分离技术不仅具有高效分离的优点,能够在温和的环境条件下工作,膜分离过程没有相变的发生,具有较低的能耗并且对环境友好,在现代分离工业技术中具有独特的竞争优势,如空气中的富氧富氮,氢气回收等,使用膜分离的方法,其投资成本可节省50%以上,经济效益显著。
目前,气体分离膜材料面临的重大挑战是现有的商业化聚合物对气体透过率较低。卤原子取代由于卤素原子直径大,键长较长,能够增加聚合物的比表面积从而提高气体在聚合物膜材料中的透过率,而且取代改性能够保持聚合物对气体较高的选择性。例如,全氟化聚合物Heflon AF,Hyflon AD,Cytop,Poly(PFMMD) 等,是特殊的气体分离聚合物膜。
发明内容
本发明的目的是提供一种具有优异的气体分离性能的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺。
本发明的另一目的是提供一种上述基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺的制备方法。
本发明的另一目的是提供一种采用上述基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺制备的气体分离膜。
为此,本发明技术方案如下:
一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺,其为由一种含卤原子取代的二氨基三蝶烯与一种四羧酸二酐聚合而成的共聚物,或由一种含卤原子取代的二氨基三蝶烯衍生物与一种四羧酸二酐聚合而成的共聚物。
该共聚物的化学反应方程式如下:
所述含卤原子取代的二氨基三蝶烯及其衍生物为卤原子一取代的二氨基三蝶烯或其衍生物、含卤原子二取代的二氨基三蝶烯或其衍生物或卤原子三取代的二氨基三蝶烯或其衍生物;其具体化学结构式为:
其中,Ar是取代或者未取代的芳香族化合物,具体为苯、苯的衍生物、萘、萘的衍生物;X为Cl、Br或I;
所述四羧酸二酐包括但不仅限于4,4'-联苯四甲酸二酐、双环[2.2.2]辛-7-烯 -2,3,5,6-四羧酸二酐、乙二胺四乙酸二酐、1,2,3,4-环丁烷四甲酸二酐、3,4,9,10- 苝四甲酸二酐、3,3',4,4'-二苯酮四甲酸二酐、均苯四甲酸二酐、1,2,4,5-环己烷四甲酸二酐、萘-1,4,5,8-四羧酸二酐、1,2,4,5-环己烷四甲酸二酐、1,6,7,12-四氯苝 -3,4,9,10-四甲酸二酐、1,2,3,4-环丁烷四甲酸二酐、1,6,7,12-四氯四芳基四羧酸二酐、3-甲基戊二酐、meso-丁烷-1,2,3,4-四甲酸二酐、2-溴萘-1,4,5,8-四羧酸1,8,4,5- 二酐、1,2,3,4-环戊烷四羧酸二酐、二乙烯基三胺基五乙酸二酐、2,6-二溴萘-1,4,5,8- 四甲酸二酐、1,6,2,3-二酐-β-D-吡喃甘露糖、3,3',4,4'-二苯基磺酰基四甲酸二酐、二溴均苯四甲酸二酐、二环己基-3,4,3',4'-四羧酸二酐、1,2,3,4-四甲基-1,2,3,4-环丁烷四羧酸二酐、三环[6.4.0.0(2,7)]十二烷-1,8,2,7-四羧酸二酐、二乙烯基三胺基五乙酸二酐、3-甲基戊二酐、3-(叔-丁基二甲基硅氧基)戊二酐、二萘嵌苯-3,4,9,10- 四甲酸二酐、双酚A二酐、六氟二酐(6FDA)、SBIDA、N,N,N',N'-四(对氨基苯基)对苯二胺(TPDA)、螺芴二酐(SBFDA)、3,3',4,4'-二苯甲酮四甲酸二酐 (BTDA)、二乙基蒽二酐(EA-DA)。
一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺,其为由一种或两种含卤原子取代的二氨基三蝶烯与两种四羧酸二酐聚合而成的共聚物,或由一种或两种含卤原子取代的二氨基三蝶烯衍生物与两种四羧酸二酐聚合而成的共聚物。
该共聚物的其中一种情况的化学反应方程式如下:
所述含卤原子取代的二氨基三蝶烯及其衍生物选自卤原子一取代的二氨基三蝶烯或其衍生物、含卤原子二取代的二氨基三蝶烯或其衍生物或卤原子三取代的二氨基三蝶烯或其衍生物;其具体化学结构式为:
其中,Ar是取代或者未取代的芳香族化合物,具体为苯、苯的衍生物、萘、萘的衍生物;X为Cl、Br或I;
所述四羧酸二酐包括但不仅限于4,4'-联苯四甲酸二酐、双环[2.2.2]辛-7-烯 -2,3,5,6-四羧酸二酐、乙二胺四乙酸二酐、1,2,3,4-环丁烷四甲酸二酐、3,4,9,10- 苝四甲酸二酐、3,3',4,4'-二苯酮四甲酸二酐、均苯四甲酸二酐、1,2,4,5-环己烷四甲酸二酐、萘-1,4,5,8-四羧酸二酐、1,2,4,5-环己烷四甲酸二酐、1,6,7,12-四氯苝 -3,4,9,10-四甲酸二酐、1,2,3,4-环丁烷四甲酸二酐、1,6,7,12-四氯四芳基四羧酸二酐、3-甲基戊二酐、meso-丁烷-1,2,3,4-四甲酸二酐、2-溴萘-1,4,5,8-四羧酸1,8,4,5- 二酐、1,2,3,4-环戊烷四羧酸二酐、二乙烯基三胺基五乙酸二酐、2,6-二溴萘-1,4,5,8- 四甲酸二酐、1,6,2,3-二酐-β-D-吡喃甘露糖、3,3',4,4'-二苯基磺酰基四甲酸二酐、二溴均苯四甲酸二酐、二环己基-3,4,3',4'-四羧酸二酐、1,2,3,4-四甲基-1,2,3,4-环丁烷四羧酸二酐、三环[6.4.0.0(2,7)]十二烷-1,8,2,7-四羧酸二酐、二乙烯基三胺基五乙酸二酐、3-甲基戊二酐、3-(叔-丁基二甲基硅氧基)戊二酐、二萘嵌苯-3,4,9,10- 四甲酸二酐、双酚A二酐、六氟二酐(6FDA)、SBIDA、N,N,N',N'-四(对氨基苯基)对苯二胺(TPDA)、螺芴二酐(SBFDA)、3,3',4,4'-二苯甲酮四甲酸二酐 (BTDA)、二乙基蒽二酐(EA-DA)。
一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺的制备方法,其具体步骤为:
S1、取二氨基三蝶烯溶于二氯甲烷中,得到二氨基三蝶烯溶液;取溴代琥珀酰亚胺溶于二氯甲烷中,得到溴代琥珀酰亚胺溶液;将二氨基三蝶烯溶液缓慢滴加至溴代琥珀酰亚胺溶液中,进行卤代反应;反应结束后,旋蒸除去溶剂,并将所得产物进行色谱柱分离,得到含卤原子取代的二氨基三蝶烯或含卤原子取代的二氨基三蝶烯衍生物;
S2、将含卤原子取代的二氨基三蝶烯或其衍生物与四羧酸二酐溶于间甲酚中,并向反应溶液中加入异喹啉作为催化剂,引发共聚反应;反应结束后,将所得共聚物在乙醇中析出,并经过索氏提取除去聚合物中混有的间甲酚,得到聚酰亚胺。
优选,在步骤S1中,卤代反应的条件:反应温度为10~50℃,反应时间为 1~24h。
优选,在步骤S2中,共聚反应的条件为:反应温度为80~180℃,反应时间为1~24h。
一种采用上述基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺制备而成的气体分离膜。其中,所述气体分离膜为均质膜或非均质膜;所述非均质膜包括中空纤维膜和复合膜的活性分离皮层。
该基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺具有优异的气体分离性能,具体来说,其对He、H2、O2、CO2四种气体透过率很高,而对N2、CH4的气体透过率很低;因此,将该聚酰亚胺制备成膜后可作为气体分离薄膜在沼气分离应用中能够有效从CH4和CO2的气体混合物中分离出CH4;由该种聚合物制备的膜材料可以在气体分离领域中有巨大的应用价值。例如,可以从空气中分别分理处N2和O2;在天然气的纯化过程中除去CO2,得到高纯度的CH4,在合成氨领域用于H2的回收。
附图说明
图1为本发明的实施例1中制备得到的3,6-二溴-2,7-二氨基三蝶烯产品;
图2为本发明的实施例2中制备得到的3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺薄膜置于图案上的对比示意图。
具体实施方式
下面结合附图及具体实施例对本发明做进一步的说明,但下述实施例绝非对本发明有任何限制。
实施例1
取2,6-二氨基三蝶烯284mg,溶于10mL二氯甲烷中,得到二氨基三蝶烯溶液;取溴代琥珀酰亚胺178mg,溶于5mL二氯甲烷中,得到溴代琥珀酰亚胺溶液;将二氨基三蝶烯溶液缓慢滴加至溴代琥珀酰亚胺溶液中,并于室温下反应 12h;反应结束后,旋蒸除去溶剂,并将所得产物进行色谱柱分离,淋洗剂为石油醚与二氯甲烷的体积比为2:1,得到3,6-二溴-2,7-二氨基三蝶烯。
将制备的3,6-二溴-2,7-二氨基三蝶烯进行核磁氢谱1H NMR测试,测试结果为:(400MHz,CDCl3):δ7.36(s,2H),7.30(dd,2H,J1=5.20Hz,J2=3.20Hz),6.99 (dd,2H,J1=5.20Hz,J2=3.20Hz),6.82(s,2H),5.11(s,2H),3.91(s,4H);可见,合成结果与设想一致。
实施例2
将通过实施例1制备的3,6-二溴-2,7-二氨基三蝶烯442mg和4,4'-(六氟异亚丙基)二邻苯二甲酸酐444mg溶于1.2mL间甲酚中,并向反应溶液中加入一滴 (0.05mL)异喹啉作为催化剂;将反应溶液的温度升高至160℃,反应2h;反应结束后,将所得聚合物在乙醇中析出,并经过索氏提取除去聚合物中混有的间甲酚,得到3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺0.842g,产率为95%。
将3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺依次进行核磁氢谱1H NMR测试、红外光谱测试和元素分析测试。具体地,核磁氢谱1H NMR(400MHz,CDCl3) 的测试结果为:δ8.02(s,2H),7.91(s,4H),7.78(s,2H),7.36(d,4H,J=24.4Hz,), 7.09(s,2H),5.48(s,2H);红外光谱(FT-IR,wavenumber,cm-1)测试结果为:3460, 3373,3205(m,N-H不对称伸缩振动),2939(s,C-H不对称伸缩振动),1618(s, N-H对称伸缩振动),1600(s,芳环C=C振动),1480,1456,1350(芳环C-H振动);元素分析测试结果为:C39H16Br2F6N2O4,理论量:C,55.06;H,1.88;N, 3.29;测量值:C,54.92;H,1.87;N,4.22。可见,合成结果与设想一致。
实施例3
将通过实施例1制备的3,6-二溴-2,7-二氨基三蝶烯221mg、对苯二胺54mg 和4,4'-(六氟异亚丙基)二邻苯二甲酸酐444mg溶于1.2mL间甲酚中,并向反应溶液中加入一滴(0.05mL)异喹啉作为催化剂;将反应溶液的温度升高至160℃,反应2.5h;反应结束后,将所得聚合物在乙醇中析出,并经过索氏提取除去聚合物中混有的间甲酚,得到3,6-二溴-2,7-二氨基三蝶烯-6FDA:对苯二胺-6FDA共聚聚酰亚胺0.642g。
对3,6-二溴-2,7-二氨基三蝶烯-6FDA:对苯二胺-6FDA共聚聚酰亚胺进行核磁氢谱1H NMR测试。具体地,核磁氢谱1H NMR(400MHz,CDCl3)测试结果为:δ8.05(m,6H),7.94(m,6H),7.78(s,2H),7.63(s,2H),7.42(s,2H),7.36(s,2H), 7.09(s,2H),5.48(s,2H)。可见,合成结果与设想一致。
实施例4
将通过实施例1制备的3,6-二溴-2,7-二氨基三蝶烯442mg、4,4'-(六氟异亚丙基)二邻苯二甲酸酐222mg和对苯二酐109mg溶于1.2mL间甲酚中,并向反应溶液中加入一滴(0.05mL)异喹啉作为催化剂;将反应溶液的温度升高至 170℃,反应3h;反应结束后,将所得聚合物在乙醇中析出,并经过索氏提取除去聚合物中混有的间甲酚,得到3,6-二溴-2,7-二氨基三蝶烯-6FDA:3,6-二溴-2,7- 二氨基三蝶烯-对本二酐(1:1)聚酰亚胺0.712g。
对3,6-二溴-2,7-二氨基三蝶烯-6FDA:3,6-二溴-2,7-二氨基三蝶烯-对本二酐聚酰亚胺进行核磁氢谱1H NMR测试。具体地,核磁氢谱1H NMR(400MHz, CDCl3)测试结果为:δ8.75(s,2H),8.05(m,8H),7.42(s,4H),7.36(s,4H),7.09 (s,4H),5.48(s,4H)。可见,合成结果与设想一致。
从上述三个实施例中可以看出,本申请提出的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺可以成功实现制备,得到新型的聚酰亚胺材料。
实施例5
对实施例2制备的3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺(PI-1)进行气体分离性能的测试:取200mg 3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺溶于10mL氯仿中,通过溶剂挥发的方式制得厚度均匀的聚酰亚胺薄膜。该聚酰亚胺薄膜在35℃,2bar纯气压力测试条件下的气体透过率如下表1所示:
表1:
PI-1 | He | H<sub>2</sub> | N<sub>2</sub> | O<sub>2</sub> | CH<sub>4</sub> | CO<sub>2</sub> |
气体透过率(Barrer) | 384 | 678 | 33 | 151 | 33 | 764 |
扩散系数*10<sup>-8</sup>(cm<sup>2</sup> s<sup>-1</sup>) | 123 | 160 | 9.37 | 28 | 2.95 | 15.9 |
溶解度系数(cc cc<sup>-1</sup>cmHg<sup>-1</sup>) | 3.13 | 4.23 | 3.51 | 5.38 | 11.1 | 48.1 |
从表1的测试结果可以看出,该3,6-二溴-2,7-二氨基三蝶烯-6FDA聚酰亚胺薄膜薄膜对He、H2、O2、CO2四种气体透过率很高,而对N2、CH4的气体透过率很低;因此,可以预见地,该气体分离薄膜在沼气分离应用中能够有效从CH4和CO2的气体混合物中分离出CH4;由该种聚合物制备的膜材料可以在气体分离领域中有巨大的应用价值。例如,可以从空气中分别分理处N2和O2;在天然气的纯化过程中除去CO2,得到高纯度的CH4,在合成氨领域用于H2的回收。
Claims (7)
1.一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺,其特征在于,其为由一种含卤原子取代的二氨基三蝶烯与一种四羧酸二酐聚合而成的共聚物,或由一种含卤原子取代的二氨基三蝶烯衍生物与一种四羧酸二酐聚合而成的共聚物;其中,共聚物的聚合度取值范围为1~10000;
所述含卤原子取代的二氨基三蝶烯及其衍生物的化学结构式为:
其中,Ar为苯、苯的衍生物、萘或萘的衍生物;X为Cl、Br或I;
所述四羧酸二酐为4,4'-联苯四甲酸二酐、双环[2.2.2]辛-7-烯-2,3,5,6-四羧酸二酐、乙二胺四乙酸二酐、1,2,3,4-环丁烷四甲酸二酐、3,4,9,10-苝四甲酸二酐、3,3',4,4'-二苯酮四甲酸二酐、均苯四甲酸二酐、1,2,4,5-环己烷四甲酸二酐、萘-1,4,5,8-四羧酸二酐、1,2,4,5-环己烷四甲酸二酐、1,6,7,12-四氯苝-3,4,9,10-四甲酸二酐、1,2,3,4-环丁烷四甲酸二酐、1,6,7,12-四氯四芳基四羧酸二酐、3-甲基戊二酐、meso-丁烷-1,2,3,4-四甲酸二酐、2-溴萘-1,4,5,8-四羧酸1,8,4,5-二酐、1,2,3,4-环戊烷四羧酸二酐、二乙烯基三胺基五乙酸二酐、2,6-二溴萘-1,4,5,8-四甲酸二酐、1,6,2,3-二酐-β-D-吡喃甘露糖、3,3',4,4'-二苯基磺酰基四甲酸二酐、二溴均苯四甲酸二酐、二环己基-3,4,3',4'-四羧酸二酐、1,2,3,4-四甲基-1,2,3,4-环丁烷四羧酸二酐、三环[6.4.0.0(2,7)]十二烷-1,8,2,7-四羧酸二酐、二乙烯基三胺基五乙酸二酐、3-甲基戊二酐、3-(叔-丁基二甲基硅氧基)戊二酐、二萘嵌苯-3,4,9,10-四甲酸二酐、双酚A二酐、六氟二酐、SBIDA、N,N,N',N'-四(对氨基苯基)对苯二胺、螺芴二酐、3,3',4,4'-二苯甲酮四甲酸二酐或二乙基蒽二酐。
2.一种基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺,其特征在于,其为由一种或两种含卤原子取代的二氨基三蝶烯与两种四羧酸二酐聚合而成的共聚物,或由一种或两种含卤原子取代的二氨基三蝶烯衍生物与两种四羧酸二酐聚合而成的共聚物;其中,共聚物的聚合度取值范围为1~10000;
所述含卤原子取代的二氨基三蝶烯及其衍生物选自具有如下化学结构式的化合物:
其中,Ar为苯、苯的衍生物、萘或萘的衍生物;X为Cl、Br或I;
所述四羧酸二酐选自4,4'-联苯四甲酸二酐、双环[2.2.2]辛-7-烯-2,3,5,6-四羧酸二酐、乙二胺四乙酸二酐、1,2,3,4-环丁烷四甲酸二酐、3,4,9,10-苝四甲酸二酐、3,3',4,4'-二苯酮四甲酸二酐、均苯四甲酸二酐、1,2,4,5-环己烷四甲酸二酐、萘-1,4,5,8-四羧酸二酐、1,2,4,5-环己烷四甲酸二酐、1,6,7,12-四氯苝-3,4,9,10-四甲酸二酐、1,2,3,4-环丁烷四甲酸二酐、1,6,7,12-四氯四芳基四羧酸二酐、3-甲基戊二酐、meso-丁烷-1,2,3,4-四甲酸二酐、2-溴萘-1,4,5,8-四羧酸1,8,4,5-二酐、1,2,3,4-环戊烷四羧酸二酐、二乙烯基三胺基五乙酸二酐、2,6-二溴萘-1,4,5,8-四甲酸二酐、1,6,2,3-二酐-β-D-吡喃甘露糖、3,3',4,4'-二苯基磺酰基四甲酸二酐、二溴均苯四甲酸二酐、二环己基-3,4,3',4'-四羧酸二酐、1,2,3,4-四甲基-1,2,3,4-环丁烷四羧酸二酐、三环[6.4.0.0(2,7)]十二烷-1,8,2,7-四羧酸二酐、二乙烯基三胺基五乙酸二酐、3-甲基戊二酐、3-(叔-丁基二甲基硅氧基)戊二酐、二萘嵌苯-3,4,9,10-四甲酸二酐、双酚A二酐、六氟二酐、SBIDA、N,N,N',N'-四(对氨基苯基)对苯二胺、螺芴二酐、3,3',4,4'-二苯甲酮四甲酸二酐、二乙基蒽二酐。
3.一种根据权利要求1或2所述的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺的制备方法,其特征在于,步骤如下:
S1、取二氨基三蝶烯或二氨基三蝶烯衍生物溶于二氯甲烷中,得到二氨基三蝶烯溶液或二氨基三蝶烯衍生物溶液;取溴代琥珀酰亚胺溶于二氯甲烷中,得到溴代琥珀酰亚胺溶液;将二氨基三蝶烯溶液或二氨基三蝶烯衍生物溶液缓慢滴加至溴代琥珀酰亚胺溶液中,使二者发生卤代反应;反应结束后,旋蒸除去溶剂,并将所得产物进行色谱柱分离,得到含卤原子取代的二氨基三蝶烯或含卤原子取代的二氨基三蝶烯衍生物;
S2、将含卤原子取代的二氨基三蝶烯或其衍生物与四羧酸二酐溶于间甲酚中,并向反应溶液中加入异喹啉作为催化剂,引发共聚反应;反应结束后,将所得共聚物在乙醇中析出,并经过索氏提取除去聚合物中混有的间甲酚,得到聚酰亚胺。
4.根据权利要求3所述的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺的制备方法,其特征在于,在步骤S1中,卤代反应的条件:反应温度为10~50℃,反应时间为1~24h。
5.根据权利要求3所述的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺的制备方法,其特征在于,在步骤S2中,共聚反应的条件为:反应温度为80~180℃,反应时间为1~24h。
6.一种采用如权利要求1或2所述的基于含卤原子取代的二氨基三蝶烯及其衍生物制备的气体分离用聚酰亚胺制备而成的气体分离膜。
7.根据权利要求6所述的气体分离膜,其特征在于,所述气体分离膜为均质膜或非均质膜。
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