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      • KCI등재
      • KCI등재후보

        성형 전 용액상태에서 요드화된 폴리비닐알코올 필름의 구조

        이양헌,신은주,최석철 한국섬유공학회 2002 한국섬유공학회지 Vol.39 No.2

        Unoriented iodinated films (IBC films) were prepared by casting aqueous solutions of 10 wt% poly(vinyl alcohol)(PVA) containing selected quantities of I$_2$/KI. The quantity of I$_2$/KI was controlled to obtain 15.2, 79.8, 83.2, 117.0, and 140.1% weight gains. The structure of the films before and after deiodination was investigated by thermogravimetry(TG), X-ray differaction analysis, differential scanning calorimetry(DSC), and dynamic mechanical thermal analyser(DMTA). The TG curves of IBC films exhibited three distinct zones of weight loss corresponding to the evaporation of $H_2O$ and I$_2$ molecules (zone I), evaporation of I$_2$ and partial decomposition of side groups(-OH)(zone II), degradation of the remaining side groups and partial degradation of main chain(zone III-1 ), and desradation of the remaining main chain and char zone corresponding to KI, which is similar to films iodinated after casting(IAC films). But the weight loss of zone I is lower and the percent of char is higher than those of the IAC film. The crystalline structure of film with weight gain of 15.2% was silmilar to that of a pure PVA, structure of films of weight gain of 77.8~117.% gradually became similar to that of IAC film with increasing weight gain, but the film with weight gain of 140.1% was almost amorphous. The DSC thermograms of IBC films with weight gains of 15.2 and 39.8% indicated endothermic single or double peaks at around 180 $^{\circ}C$ correlponding to the crystal melting and degradation of side groups, those with weight gains of 83.2% and over indicated exothermic peak at around 17$0^{\circ}C$ which may be corresponding to crystallization, and broad endothermic peak at around 180~20$0^{\circ}C$ corresponding to the crystal melting and degradation of side groups. The dynamic mechanical un transition of the IBC film with weight gains of 140.1% appeared around 2$0^{\circ}C$. X-ray diffraction and DSC analysis of deiodinated films showed that the crystal struoture on deiodination of all IBC films, regardless of crystallinity, returned to that of the pure PVA films.

      • KCI등재후보
      • KCI우수등재

        요드 처리된 나일론 6 필름의 구조 및 연신성(II)-성형 전.후에 요드 처리된 필름의 결정구조 및 연신성-

        이양헌,강영아 한국섬유공학회 1998 한국섬유공학회지 Vol.35 No.1

        Nylon 6 film (IAF film) and powder were iodinated with 0.2, 0.4, 0.6 and 1.0 N of I$_2$/KI aqueous solutions, and the iodinated powder was used to make the films iodinated before forming (IBF film). The crystal structure and drawability of the two kinds of films were investigated through X-ray diffraction, DSC, IR analysis, and tensile test. In the case of IAF films, not only the 4 steps in formation of the nylon 6-iodine complex crystal with increasing concentration of I$_2$/KI but also the existence of $I^-_5$ ions over the 2nd step were confirmed again by X-ray diffraction and DSC analysis. In the case of IBF films, however, the formation of the complex crystal was not confirmed. but the formation of new $\alpha$- and ${\gamma}$-crystals of nylon 6 was confirmed by X-ray diffraction, IR, and DSC analysis. The tensile behavior of IAF showed the much lower yield and breaking loads and the much higher breaking elongation in comparison with untreated film, but the elongation of IBF films was lower though the load was lower than that of IAF films. The maximum draw ratio and initial modulus were 3.5 and 0.88 GPa for the untreated film, 9.5 and 9.48 GPa for the drawn IAF films after removal of iodine, and 5.5 and 1.16 GPa for the drawn IBF films after removal of iodine. The maximum values of draw ratio and initial modulus could be achieved from the films iodinated with 1.0 N I$_2$/KI solution, and at drawing temperatures of 4$0^{\circ}C$ and 60% for IAF and IBF films, respectively.

      • KCI등재

        市販 洗濯後處理劑(帶電防止 및 柔軟處理劑)의 效果에 관한 硏究

        李亮憲 한국의류학회 1985 한국의류학회지 Vol.9 No.2

        Cotton, P/C and polyester fabrics were laundered and treated with 4 kinds of aitertreating agent (antistatic and softening agents) on marketing. Some treating conditions, which include agent concenteration, treating time and rinsing extent after laundering, were varied. And then the effects of agents with each treating condition-handle value, charged voltage and half-life, and crease recovery etc.-were determined and discussed about their change. The improvement of handle and antistatic properties by treatment were indicated remarkably for cotton fabric and P/C and polyester fabrics respectively. Generally, the handle value of cotton was decreased and then increased again, and the charged voltage and halflife of P/C and polyester fabrics were decreased with increase of concenteration of agents. The effect of antistatic improvement for P/C fabric was larger than polyester fabric at even lower concenteration of agents. The effects were increased with treating time and rinsing extent. In particular, those of short time(1 minute) treatment were very small.

      • KCI등재
      • KCI등재

        역사의식은 존재한는가? : 1990년대 독일드라마 연구(4) Deutsche Dramen der 90er Jahre

        이양헌 全南大學校 人文科學硏究所 2001 용봉인문논총 Vol.30 No.-

        Botho Strauß und Peter Handke, zwei wichtige Chronisten der bundesrepublikanischen Wirklichkeit der 70er und 80er Jahre, reagieren mit ihren Arbeiten fu¨r die Bu¨hne a¨hnlich und doch unterschiedlich zugleich auf die Zeit. Sie blicken zuru¨ ck in die Antike oder nach vorn in ein ungefa¨hres Neue und meinen beige die Gegenwart mit ihren dramatischen Entwu¨fen. Zwei Personen behaupten die Konstruktion von etwas Neuem. Wa¨hrend Botho Strauß in "Ithaka" Homers Odysseus zuru¨ck-kommen la¨βt, um unter den prassenden Freiern Penelopes ge-waltsam eine ate und gleichzeitig neue Ordnung herzustellen, verlangt Peter Handke gar nach einem Ko¨nig, der neue Gesetze erla¨ßt. Handke und Strauß thematisieren die Problem der Zeit ebenso in ihren Arbeiten fu¨r des Theater wie Werner Buhss. Doch ihre Lo¨sungsmodelle fu¨r die Bu¨hne unterscheiden sich von der diskursiven des ostdeutschen Dramatikers fundamental. Wo die etablierten Autoren mit Go¨tterspruch und Ko¨nigsrede den Lauf der Welt bestimmen wollen, la¨ßt Buhss die Handlanger der Macht aufeinander treffen und Macht und Ohnmacht gegeneinander antreten. Interessant ist die Tatsache, daß Buhss' Helden beide Ko¨nigsmo¨rder sind. Aus seiner Sicht haben die starken Herrscher der Welt ausgedient und komplexe Fu¨hrungsmodelle der Wirtschaft ebenso wie der Politik bestimmen die Wirklichkeit. Das auch hier Hierarchien die Regel sind, weist Buhss' mit seinem Stu¨ck nach und zeichnet seine Figuren als geschichtliche Wesen, eingebunden in Ver-gangenheit, Gegenwart unto Zukunft. Festzuhalten bleibt, daß in den Texten von Buhss, Handke und Strauß auf sehr unterschiedliche Weise der Wirklickeit begegnet wird : mit Ru¨ckzug ins Vergangene, lmagination einer Zukunft und Darstellung der Gegenwart. Doch es scheint so, alto ob die Ko¨nigsmo¨rder bei Werner Buhss eine gro¨ßere Zu-kunftsfa¨higkeit besitzen als die Gesetzesverku¨der von Strauß und Handke - nicht zuletzt weil sie sich ihrer Geschichte stellen.

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