应用化学
應用化學
응용화학
CHINESE JOURNAL OF APPLIED CHEMISTRY
2001年
2期
116-119
,共4页
阎卫东%刘立新%姜涛%李丹%周鼐%胡友良
閻衛東%劉立新%薑濤%李丹%週鼐%鬍友良
염위동%류립신%강도%리단%주내%호우량
间规聚苯乙烯%苯乙烯%间规聚合%β-二酮钛配合物%热性能
間規聚苯乙烯%苯乙烯%間規聚閤%β-二酮鈦配閤物%熱性能
간규취분을희%분을희%간규취합%β-이동태배합물%열성능
以β-二酮钛配合物/MAO催化苯乙烯间规聚合.80 C，β-二酮钛浓度为4.3×10-4mol/L，β-二酮钛与MAO的物质的量比为500时，聚合活性为6.2×l05g/(mol·h).该催化剂对温度的稳定性较高.所得聚合物的熔点在267C左右.测定了所得间规聚苯乙烯的基本热性能.
以β-二酮鈦配閤物/MAO催化苯乙烯間規聚閤.80 C，β-二酮鈦濃度為4.3×10-4mol/L，β-二酮鈦與MAO的物質的量比為500時，聚閤活性為6.2×l05g/(mol·h).該催化劑對溫度的穩定性較高.所得聚閤物的鎔點在267C左右.測定瞭所得間規聚苯乙烯的基本熱性能.
이β-이동태배합물/MAO최화분을희간규취합.80 C，β-이동태농도위4.3×10-4mol/L，β-이동태여MAO적물질적량비위500시，취합활성위6.2×l05g/(mol·h).해최화제대온도적은정성교고.소득취합물적용점재267C좌우.측정료소득간규취분을희적기본열성능.
The syndiospecific polymerization of styrene was carried out via β-diketonate titanium complex/MAO. The polymerization activity approached to 6.2×10s g/(mol · h) in reaction conditions: catalyst 4.3×l0-4 mol/L, molar ratio of aluminum to titanium 500 : 1, 80 C and 1 h .The melting temperature of the syndiotactic polystyrene was about 267 C. The effects of molar ratio of aluminum to titanium, concentration of β-diketonate titanium complex and temperature on polymerization were investigated. The polymer was characterized by 13C NMR and DSC. The thermal properties of the syndiotactic polystyrene were discussed.
