Chemist Leo Baekeland


化学家利奥·贝克兰 （2）

[9] Starting around 190)4, Baekeland and an assistant began their search. Three years later, after filling laboratory books with page after page of failed experiments, Baekeland finally developed a material that he dubbed in his notebooks "Bakelite". The key turned out to be his "bakelizer", a heavy iron vessel that was part pressure cooker and part basement boiler. With it, be was able to control the formaldehydephenol phenol reaction with more finesse than had anyone before him.

[10] initial heating of the phenol and formaldehyde (in the presence of an acid or base to get the reaction going) produced a shellac-like liquid good for coating surfaces like a varnish. Further heating turned the liquid into a pasty, gummier good. And when Baekeland put this stuff into the bakelizer, he was rewarded with a hard, translucent, infinitely moldable substance. In a word: plastic.

[11] He filed patent applications and soon began leaking word of his invention to other chemists. In 1909 Baekeland un-veiled the world's first fully synthetic plas-tic at a meeting of the New York chapter of the American Chemical Society. Would-be customers discovered it could be fashioned into molded insulation, valve parts, pipe stems, billiard balls, knobs, buttons, knife handles and all manners of items.

[12] It was 20th century alchemy. From something as vile as coal tar came a remarkably versatile substance. It wasn't the first plastic, however. Celluloid had been commercially available for decades as a substitute for tortoise-shell, horn, bone and other materials. But celluloid, which had developed a reputation as a cheap mim-ic of better traditional materials, was de-rived from chemically treated cotton and other cellulose-containing vegetable matter. Bakelite was lab-made through and through. It was 100% synthetic.

[13] Baekeland founded the Central Bakelite Corp. to both make and license the manufacture of Bakelite. Competitors soon marketed knockoffs----most notably Redmanol and Condensite, which Thomas Edison used in a failed attempt to dominate the nascent recording industry with "un-breakable" phonograph disks. The presence of inauthentic Bakelite out there led to an early 20th century version of the "Intel In-side" logo. Items made with the real thing carried a "tag of genuineness" bearing the Bakelite name. Following drawn-out patent wars, Baekeland negotiated a merger with his rivals that put him at the helm of a veri-table Bakelite empire.

[14] Bakelite became so visible in so many places that the company advertised it as "the material of a thousand uses". It be-came the stuff of everything from cigar hold-ers and rosary beads to radio housings, dis-tributor caps and telephone casings. A 1924 Time cover story on Baekeland reported that those familiar with Bakelite's potential "claim that in a few years it will be embod-ied in every mechanical facility of modern civilization".

[15] In truth, Bakelite-whose more chemically formal name is polyoxybenzylmethylenglycolanliydrid----was just a harbinger of the age of plastics. Since Bakelite's heyday, researchers have churned out a polysyllabic catalog of plastics: polymethylmetliacrylate ( Plexiglas ), polyesters, polyethylene, polyvinyl chloride (PVC, a. k. a. vinyl), polyhexamethylene adipamide (the original nylon polymer), polytetnifluoroethylene(Teflon), polyurethane, poly-this, poly-that.

[16] In 1945, a year after Baekeland died, annual plastic production in the U.S. reached more than 400,000 tons. In 1979, 12 years after The Graduate, the an-nual volume of plastic manufactured over-took that of steel, the symbol of the Indus-trial Revolution. last year nearly 47 million tons of plastic were produced.

[17] Today plastic is nearly every-where, from the fillings in our teeth to the chips in our computers (researchers are de-veloping flexible transistors made of plastic instead of silicon so they can make marvels such as a flat-panel television screen that will roll like a scroll up your living-room wall). Plastic may not be as vilified now as it was in 1967, but it's still a stuff that peo-ple love and hate. Every time a grocery clerk asks, "Paper or plastic?", the great debate between old and new, natural and synthetic, biodegradable and not, silently unfolds in a shopper's breast in the instant it takes to decide on the answer.

[9]1904年左右，贝克兰和一个助手开始了他们的寻找工作。三年后，在实验室的记录本上记满了一页又一页的失败试验后，贝克兰终于制造出了一种他在记录本上昵称为“Bakelite（酚醛塑料）”的材料。后来证实关键的东西是他的“bakelizer(塑料合成器）”，一个部分是压力锅，部分是地下锅炉的重铁容器。有了这个容器，他能比所有前人更加细微地控制甲醛-酚的反应。

[10]开始加热，酚和甲醛（需有酸或碱促使其反应进行）便产生了像紫胶样的液体，能像清漆一样涂于物体表面。再加热，液体变成了糊状的更具黏性的东西。当贝克兰将这种东西放进了合成器后，他获得了一种坚硬的、半透明的、具有无限可塑性的物质。它就是：塑料。

[11]他申请了专利，不久就开始将自己的发明透露给其他化学工作者。1909年，贝克兰在美国化学协会纽约分会的一次会议上，向世人展示了世界第一块全合成塑料。未来的客户发现它能够制造成铸模绝缘材料、阀门零件、细长的物品、台球、球形柄、纽扣、刀柄以及各种各样的物件。

[12]这是20世纪的炼金术。从某种像煤渣那样污秽的东西中炼出了一种用途十分广泛的东西。然而这还不是首批塑料。几十年来，赛璐璐一直在商业上充当龟甲、角、骨和其他材料的代用品。众所周知，赛璐璐虽价格低廉，能仿制质量较好的传统材料，它却是取自化学处理的棉花和别的含有赛钱璃纤维素的蔬菜之中。酚醛塑料则完全是实验室的产品，是百分之百的合成物。

[13]贝克兰建立了通用酚醛塑料公司，不仅制造酚醛塑料，而且颁发它的生产许可证。竞争者不久就开始销售假冒产品——最有名的是Redmanol和Condensite，托马斯·爱迪生曾使用过这些产品，企图以“不碎的”唱机盘片独占刚起步的唱片工业，但宣告失败。从那儿开始的假冒酚醛塑料的出现引出了20世纪早期的“Intel Inside”商标形式。用真材实料制成的物品都带有一个标有酚醛名字的“真货商标”。经过持久的专利战，贝克兰和他的对手签约合作，使他获得了一个真正的酚醛塑料大企业的领导权。

[14]酚醛几乎到处可见，以致于公司打出广告称它为“万能材料”。其用途十分广泛，从雪茄烟烟炳和寺庙中僧人手中的念珠到收音机的外壳、配电盘盖和电话机的机壳。1924年以贝克兰为封面的一期（时代》杂志的封面人物故事报道说，那些知晓酚醛潜力的人“声称再过几年它就会体现在现代文明的每一个机械设备上”。

[15]事实上，酚醛----其正式的化学名称是聚甲苯甲醛甘醇酐----只是预示了塑料时代的到来。自酚醛的发展高峰期以来，研究者们已研制出了多种多样的塑料：聚甲基丙烯酸甲酯（有机玻璃）、聚酯、聚乙烯、聚氯乙 烯（PVC，也称乙烯基）、聚亚乙基乙二酸胺（原先的尼龙聚合物）。聚四氯乙烯（特氟隆）、聚氨酯、聚这个、聚那个。

[16]1945年，贝克兰逝世一年后，美国的塑料年生产量已达到了40多万吨。1979年，电影（毕业生）放映12年后，塑料年产量超过了钢----工业革命的象征。去年，塑料产量已近4700万吨。

[17]今天，塑料几乎用于各个领域，从补牙材料到计算机的芯片（研究者们正在研制用塑料而非硅制作的易弯曲的晶体管，这样他们可以创造出像悬挂在客厅墙上可卷起或展开的平面直角式电视屏幕那样的奇迹）。塑料可能不像在1967年那样受到诋毁，但人们对它仍是既恨又爱。每当杂货店售货员问“要纸还是要塑料？”时，新旧观念、天然的还是合成的、能否进行生物分解等等问题就悄悄地在购物者考虑答案的瞬间，在他的心中展开争论了。

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