{"id":567,"date":"2024-02-04T11:58:34","date_gmt":"2024-02-04T03:58:34","guid":{"rendered":"https:\/\/joyforce-tech.com\/?p=567"},"modified":"2024-08-25T13:44:07","modified_gmt":"2024-08-25T05:44:07","slug":"the-use-of-polyvinyl-alcohol-and-its-gelation-process","status":"publish","type":"post","link":"https:\/\/joyforce-tech.com\/el\/the-use-of-polyvinyl-alcohol-and-its-gelation-process.html","title":{"rendered":"\u0397 \u03c7\u03c1\u03ae\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03b7 \u03b4\u03b9\u03b1\u03b4\u03b9\u03ba\u03b1\u03c3\u03af\u03b1 \u03b6\u03b5\u03bb\u03b1\u03c4\u03b9\u03bd\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03ae\u03c2 \u03c4\u03b7\u03c2"},"content":{"rendered":"<p>\u0397 \u03c0\u03bf\u03bb\u03c5(\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7) \u03b5\u03af\u03bd\u03b1\u03b9 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\u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03c5\u03bd\u03b8\u03b5\u03af \u03b7 \u03b4\u03b9\u03ac\u03bb\u03c5\u03c3\u03b7.<\/p>\n<p>\u03a4\u03bf \u03b9\u03be\u03ce\u03b4\u03b5\u03c2 \u03c4\u03bf\u03c5 \u03c5\u03b4\u03b1\u03c4\u03b9\u03ba\u03bf\u03cd \u03b4\u03b9\u03b1\u03bb\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 PVA 17-88 \u03b1\u03c5\u03be\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03bf \u03c7\u03c1\u03cc\u03bd\u03bf \u03c3\u03b5 \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1 \u03b4\u03c9\u03bc\u03b1\u03c4\u03af\u03bf\u03c5. \u03a9\u03c3\u03c4\u03cc\u03c3\u03bf, \u03cc\u03c4\u03b1\u03bd \u03b7 \u03c3\u03c5\u03b3\u03ba\u03ad\u03bd\u03c4\u03c1\u03c9\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 8%, \u03c4\u03bf \u03b9\u03be\u03ce\u03b4\u03b5\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03bf\u03bb\u03cd\u03c4\u03c9\u03c2 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03cc. \u0397 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7 17-92 \u03b1\u03bd\u03b1\u03c6\u03ad\u03c1\u03b5\u03c4\u03b1\u03b9 \u03c9\u03c2 PVA17 92. \u03a4\u03bf \u03b4\u03b9\u03ac\u03bb\u03c5\u03bc\u03b1 PVA17 99 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03b9\u03bf \u03b5\u03c5\u03b1\u03af\u03c3\u03b8\u03b7\u03c4\u03bf \u03c3\u03c4\u03bf PVA17-88 \u03b1\u03c0\u03cc \u03c4\u03bf PVA17-88. \u039f \u03b2\u03cc\u03c1\u03b1\u03ba\u03b1\u03c2 0,1% \u03c4\u03b7\u03c2 \u03c0\u03bf\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03bf\u03c5 \u03b4\u03b9\u03b1\u03bb\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b8\u03b1 \u03b6\u03b5\u03bb\u03b1\u03c4\u03b9\u03bd\u03bf\u03c0\u03bf\u03b9\u03ae\u03c3\u03b5\u03b9 \u03c4\u03bf \u03b4\u03b9\u03ac\u03bb\u03c5\u03bc\u03b1 5%PVA17 99, \u03ba\u03b1\u03b9 \u03b7 \u03c0\u03bf\u03c3\u03cc\u03c4\u03b7\u03c4\u03b1 \u03c4\u03bf\u03c5 \u03b2\u03cc\u03c1\u03b1\u03ba\u03b1 \u03c0\u03bf\u03c5 \u03c0\u03c1\u03bf\u03ba\u03b1\u03bb\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03c3\u03c5\u03b3\u03ba\u03ad\u03bd\u03c4\u03c1\u03c9\u03c3\u03b7 \u03c5\u03b4\u03b1\u03c4\u03b9\u03ba\u03bf\u03cd \u03b4\u03b9\u03b1\u03bb\u03cd\u03bc\u03b1\u03c4\u03bf\u03c2 PVA17-88 \u03b5\u03af\u03bd\u03b1\u03b9 1%. \u0397 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7 1799b \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03ba\u03c5\u03c1\u03af\u03c9\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03c3\u03ba\u03b5\u03c5\u03ae \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03bf\u03b2\u03bf\u03c5\u03c4\u03c5\u03c1\u03ac\u03bb\u03b7\u03c2 \u03c5\u03c8\u03b7\u03bb\u03bf\u03cd \u03b9\u03be\u03ce\u03b4\u03bf\u03c5\u03c2. \u03a7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03b5\u03c5\u03c1\u03ad\u03c9\u03c2 \u03c9\u03c2 \u03b4\u03b9\u03b1\u03c3\u03ba\u03bf\u03c1\u03c0\u03b9\u03c3\u03c4\u03b9\u03ba\u03cc \u03c4\u03bf\u03c5 \u03c0\u03b1\u03c1\u03ac\u03b3\u03bf\u03bd\u03c4\u03b1 \u03b4\u03b9\u03b1\u03c3\u03c4\u03b1\u03c3\u03b9\u03bf\u03bb\u03cc\u03b3\u03b7\u03c3\u03b7\u03c2.<\/p>\n<p>\u0395\u03c0\u03b9\u03c0\u03bb\u03ad\u03bf\u03bd, \u03b7 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7 \u03ad\u03c7\u03b5\u03b9 \u03b4\u03b9\u03ac\u03c6\u03bf\u03c1\u03b5\u03c2 \u03c4\u03c5\u03c0\u03b9\u03ba\u03ad\u03c2 \u03b1\u03bd\u03c4\u03b9\u03b4\u03c1\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b4\u03b5\u03c5\u03c4\u03b5\u03c1\u03bf\u03b3\u03b5\u03bd\u03ce\u03bd \u03c5\u03b4\u03c1\u03bf\u03be\u03c5\u03bb\u03b9\u03ba\u03ce\u03bd \u03b5\u03bd\u03ce\u03c3\u03b5\u03c9\u03bd, \u03cc\u03c0\u03c9\u03c2 \u03b7 \u03b5\u03c3\u03c4\u03b5\u03c1\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7. \u039c\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b1\u03c0\u03bf\u03b9\u03ba\u03bf\u03b4\u03bf\u03bc\u03b7\u03b8\u03b5\u03af \u03c3\u03b5 \u03b9\u03c3\u03c7\u03c5\u03c1\u03cc \u03bf\u03be\u03cd, \u03bd\u03b1 \u03bc\u03b1\u03bb\u03b1\u03ba\u03ce\u03c3\u03b5\u03b9 \u03ae \u03bd\u03b1 \u03b4\u03b9\u03b1\u03bb\u03c5\u03b8\u03b5\u03af \u03c3\u03b5 \u03b1\u03c3\u03b8\u03b5\u03bd\u03ad\u03c2 \u03bf\u03be\u03cd \u03ba\u03b1\u03b9 \u03b2\u03ac\u03c3\u03b7. \u0397 PVA \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c3\u03c5\u03b3\u03ba\u03ad\u03bd\u03c4\u03c1\u03c9\u03c3\u03b7\u03c2 \u03b4\u03b5\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c5\u03bc\u03b2\u03b1\u03c4\u03ae \u03bc\u03b5 \u03b1\u03bd\u03cc\u03c1\u03b3\u03b1\u03bd\u03b1 \u03ac\u03bb\u03b1\u03c4\u03b1, \u03b9\u03b4\u03af\u03c9\u03c2 \u03b8\u03b5\u03b9\u03b9\u03ba\u03ac \u03ba\u03b1\u03b9 \u03c6\u03c9\u03c3\u03c6\u03bf\u03c1\u03b9\u03ba\u03ac. \u03a4\u03bf \u03c6\u03c9\u03c3\u03c6\u03bf\u03c1\u03b9\u03ba\u03cc \u03ac\u03bb\u03b1\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03ba\u03b1\u03c4\u03b1\u03b2\u03c5\u03b8\u03af\u03c3\u03b5\u03b9 \u03c4\u03bf 5% (w\/v) PVA. \u039f \u03b2\u03cc\u03c1\u03b1\u03ba\u03b1\u03c2 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c3\u03c7\u03b7\u03bc\u03b1\u03c4\u03af\u03c3\u03b5\u03b9 \u03b3\u03ad\u03bb\u03b7 \u03bc\u03b5 \u03b4\u03b9\u03ac\u03bb\u03c5\u03bc\u03b1 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7\u03c2.<\/p>\n<p>\u0397 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03ba\u03b1\u03bb\u03ae \u03ba\u03cc\u03bb\u03bb\u03b1, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03ae\u03c3\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c3\u03cc\u03c4\u03b5\u03c1\u03b5\u03c2 \u03b2\u03b9\u03bf\u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ad\u03c2 \u03ba\u03cc\u03bb\u03bb\u03b5\u03c2. \u03a0\u03ce\u03c2 \u03b2\u03c1\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03ba\u03cc\u03bb\u03bb\u03b1 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7\u03c2; \u03a0\u03c1\u03ce\u03c4\u03b1 \u03b1\u03c0' \u03cc\u03bb\u03b1, \u03c0\u03c1\u03bf\u03b5\u03c4\u03bf\u03b9\u03bc\u03ac\u03c3\u03c4\u03b5 \u03b1\u03c1\u03ba\u03b5\u03c4\u03ae \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7, \u03c0\u03bf\u03c4\u03ae\u03c1\u03b9 \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2 1000 ml, \u03b3\u03c5\u03ac\u03bb\u03b9\u03bd\u03b7 \u03c0\u03bb\u03ac\u03ba\u03b1, \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ae \u03ba\u03bf\u03c5\u03b6\u03af\u03bd\u03b1 \u03ba\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03bb\u03b5\u03ba\u03ac\u03bd\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 (\u03b7 \u03b4\u03b9\u03ac\u03bc\u03b5\u03c4\u03c1\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 30-40 cm). \u038c\u03c4\u03b1\u03bd \u03b5\u03af\u03c3\u03c4\u03b5 \u03ad\u03c4\u03bf\u03b9\u03bc\u03bf\u03b9, \u03c0\u03ac\u03c1\u03c4\u03b5 50-80 \u03b3\u03c1\u03b1\u03bc\u03bc\u03ac\u03c1\u03b9\u03b1 \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae\u03c2 \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7\u03c2 \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03c0\u03bf\u03c4\u03ae\u03c1\u03b9 \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2. \u03a0\u03c1\u03bf\u03c3\u03b8\u03ad\u03c3\u03c4\u03b5 900-1000 ml \u03bd\u03b5\u03c1\u03bf\u03cd \u03ba\u03b1\u03bd\u03bf\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1\u03c2 \u03c3\u03c4\u03bf \u03c0\u03bf\u03c4\u03ae\u03c1\u03b9 \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03b1\u03ba\u03b1\u03c4\u03ad\u03c8\u03c4\u03b5 \u03bc\u03b5 \u03bc\u03b9\u03b1 \u03b3\u03c5\u03ac\u03bb\u03b9\u03bd\u03b7 \u03c1\u03ac\u03b2\u03b4\u03bf. \u03a4\u03bf \u03bd\u03b5\u03c1\u03cc \u03b4\u03b5\u03bd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03b3\u03b5\u03bc\u03ac\u03c4\u03bf. \u0395\u03af\u03bd\u03b1\u03b9 \u03c0\u03c1\u03bf\u03c4\u03b9\u03bc\u03cc\u03c4\u03b5\u03c1\u03bf \u03bd\u03b1 \u03b1\u03c0\u03ad\u03c7\u03b5\u03b9 2-3 \u03b5\u03ba\u03b1\u03c4\u03bf\u03c3\u03c4\u03ac \u03b1\u03c0\u03cc \u03c4\u03bf \u03c3\u03c4\u03cc\u03bc\u03b9\u03bf \u03c4\u03bf\u03c5 \u03c0\u03bf\u03c4\u03b7\u03c1\u03b9\u03bf\u03cd \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2. \u0395\u03ac\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03bf\u03bb\u03cd \u03b3\u03b5\u03bc\u03ac\u03c4\u03bf, \u03b7 \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b8\u03b1 \u03c5\u03c0\u03b5\u03c1\u03c7\u03b5\u03b9\u03bb\u03af\u03c3\u03b5\u03b9. \u03a4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03c4\u03b5 \u03c4\u03bf \u03c0\u03bf\u03c4\u03ae\u03c1\u03b9 \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2 \u03c3\u03c4\u03b7 \u03bb\u03b5\u03ba\u03ac\u03bd\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1, \u03c0\u03c1\u03bf\u03c3\u03b8\u03ad\u03c3\u03c4\u03b5 \u03bd\u03b5\u03c1\u03cc \u03ba\u03b1\u03bd\u03bf\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1\u03c2 \u03c3\u03c4\u03b7 \u03bb\u03b5\u03ba\u03ac\u03bd\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 \u03ba\u03b1\u03b9 \u03b2\u03c5\u03b8\u03af\u03c3\u03c4\u03b5 \u03c4\u03b1 2\/3 \u03c4\u03bf\u03c5 \u03cd\u03c8\u03bf\u03c5\u03c2 \u03c4\u03bf\u03c5 \u03c0\u03bf\u03c4\u03b7\u03c1\u03b9\u03bf\u03cd \u03b6\u03ad\u03c3\u03b5\u03c9\u03c2. \u03a4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03c4\u03b5 \u03c4\u03b7 \u03bb\u03b5\u03ba\u03ac\u03bd\u03b7 \u03b1\u03c0\u03cc \u03b1\u03bd\u03bf\u03be\u03b5\u03af\u03b4\u03c9\u03c4\u03bf \u03c7\u03ac\u03bb\u03c5\u03b2\u03b1 \u03c3\u03c4\u03bf\u03bd \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03cc \u03ba\u03bb\u03af\u03b2\u03b1\u03bd\u03bf \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b8\u03b5\u03c1\u03bc\u03b1\u03bd\u03b8\u03b5\u03af \u03ba\u03b1\u03b9 \u03b1\u03bd\u03b1\u03ba\u03b1\u03c4\u03ad\u03c8\u03c4\u03b5 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03ad\u03c1\u03bc\u03b1\u03bd\u03c3\u03b7. \u0391\u03c6\u03bf\u03cd \u03b4\u03b9\u03b1\u03bb\u03c5\u03b8\u03b5\u03af \u03c0\u03bb\u03ae\u03c1\u03c9\u03c2 \u03b7 \u03c3\u03c4\u03b5\u03c1\u03b5\u03ae \u03c0\u03bf\u03bb\u03c5\u03b2\u03b9\u03bd\u03c5\u03bb\u03b9\u03ba\u03ae \u03b1\u03bb\u03ba\u03bf\u03cc\u03bb\u03b7, \u03b2\u03b3\u03ac\u03bb\u03c4\u03b5 \u03c4\u03bf 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It is soluble in glycerin at 120-150 \u2103, but becomes jelly at room temperature. In the dissolving step of polyvinyl alcohol, the material should be added into room temperature water under stirring, and then heated to [&hellip;]<\/p>","protected":false},"author":2,"featured_media":568,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-567","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bolg"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The use of polyvinyl alcohol and its gelation process - Joyforce PVA Film and Bag<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/joyforce-tech.com\/el\/the-use-of-polyvinyl-alcohol-and-its-gelation-process.html\/\" \/>\n<meta property=\"og:locale\" content=\"el_GR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The use of polyvinyl alcohol and its gelation process - Joyforce PVA Film and Bag\" \/>\n<meta property=\"og:description\" content=\"Poly (vinyl alcohol) is a kind of water-soluble polymer obtained by hydrolysis of polyvinyl acetate instead of monomer polymerization. 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